configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-libquvi         enable quvi input via libquvi [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 259   --enable-libvidstab      enable video stabilization using vid.stab [no]
 260   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mmal            enable decoding via MMAL [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-nvenc           enable NVIDIA NVENC support [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl            disable sdl [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --enable-x11grab         enable X11 grabbing (legacy) [no]
 295   --disable-xlib           disable xlib [autodetect]
 296   --disable-zlib           disable zlib [autodetect]
 297
 298 Toolchain options:
 299   --arch=ARCH              select architecture [$arch]
 300   --cpu=CPU                select the minimum required CPU (affects
 301                            instruction selection, may crash on older CPUs)
 302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 303   --progs-suffix=SUFFIX    program name suffix []
 304   --enable-cross-compile   assume a cross-compiler is used
 305   --sysroot=PATH           root of cross-build tree
 306   --sysinclude=PATH        location of cross-build system headers
 307   --target-os=OS           compiler targets OS [$target_os]
 308   --target-exec=CMD        command to run executables on target
 309   --target-path=DIR        path to view of build directory on target
 310   --target-samples=DIR     path to samples directory on target
 311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 312   --toolchain=NAME         set tool defaults according to NAME
 313   --nm=NM                  use nm tool NM [$nm_default]
 314   --ar=AR                  use archive tool AR [$ar_default]
 315   --as=AS                  use assembler AS [$as_default]
 316   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 317   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 318   --cc=CC                  use C compiler CC [$cc_default]
 319   --cxx=CXX                use C compiler CXX [$cxx_default]
 320   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 321   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 322   --ld=LD                  use linker LD [$ld_default]
 323   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 324   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 325   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 326   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 327   --host-cc=HOSTCC         use host C compiler HOSTCC
 328   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 329   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 330   --host-ld=HOSTLD         use host linker HOSTLD
 331   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 332   --host-libs=HLIBS        use libs HLIBS when linking for host
 333   --host-os=OS             compiler host OS [$target_os]
 334   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 335   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 336   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 337   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 338   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 339   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 340   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 341   --extra-version=STRING   version string suffix []
 342   --optflags=OPTFLAGS      override optimization-related compiler flags
 343   --build-suffix=SUFFIX    library name suffix []
 344   --enable-pic             build position-independent code
 345   --enable-thumb           compile for Thumb instruction set
 346   --enable-lto             use link-time optimization
 347   --env="ENV=override"     override the environment variables
 348
 349 Advanced options (experts only):
 350   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 351   --custom-allocator=NAME  use a supported custom allocator
 352   --disable-symver         disable symbol versioning
 353   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 354   --disable-safe-bitstream-reader
 355                            disable buffer boundary checking in bitreaders
 356                            (faster, but may crash)
 357   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 358   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 359
 360 Optimization options (experts only):
 361   --disable-asm            disable all assembly optimizations
 362   --disable-altivec        disable AltiVec optimizations
 363   --disable-vsx            disable VSX optimizations
 364   --disable-power8         disable POWER8 optimizations
 365   --disable-amd3dnow       disable 3DNow! optimizations
 366   --disable-amd3dnowext    disable 3DNow! extended optimizations
 367   --disable-mmx            disable MMX optimizations
 368   --disable-mmxext         disable MMXEXT optimizations
 369   --disable-sse            disable SSE optimizations
 370   --disable-sse2           disable SSE2 optimizations
 371   --disable-sse3           disable SSE3 optimizations
 372   --disable-ssse3          disable SSSE3 optimizations
 373   --disable-sse4           disable SSE4 optimizations
 374   --disable-sse42          disable SSE4.2 optimizations
 375   --disable-avx            disable AVX optimizations
 376   --disable-xop            disable XOP optimizations
 377   --disable-fma3           disable FMA3 optimizations
 378   --disable-fma4           disable FMA4 optimizations
 379   --disable-avx2           disable AVX2 optimizations
 380   --disable-aesni          disable AESNI optimizations
 381   --disable-armv5te        disable armv5te optimizations
 382   --disable-armv6          disable armv6 optimizations
 383   --disable-armv6t2        disable armv6t2 optimizations
 384   --disable-vfp            disable VFP optimizations
 385   --disable-neon           disable NEON optimizations
 386   --disable-inline-asm     disable use of inline assembly
 387   --disable-yasm           disable use of nasm/yasm assembly
 388   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 389   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 390   --disable-msa            disable MSA optimizations
 391   --disable-mipsfpu        disable floating point MIPS optimizations
 392   --disable-mmi            disable Loongson SIMD optimizations
 393   --disable-fast-unaligned consider unaligned accesses slow
 394
 395 Developer options (useful when working on FFmpeg itself):
 396   --disable-debug          disable debugging symbols
 397   --enable-debug=LEVEL     set the debug level [$debuglevel]
 398   --disable-optimizations  disable compiler optimizations
 399   --enable-extra-warnings  enable more compiler warnings
 400   --disable-stripping      disable stripping of executables and shared libraries
 401   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 402                            2 causes a slowdown at runtime.
 403   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 404   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 405                            leaks and errors, using the specified valgrind binary.
 406                            Cannot be combined with --target-exec
 407   --enable-ftrapv          Trap arithmetic overflows
 408   --samples=PATH           location of test samples for FATE, if not set use
 409                            \$FATE_SAMPLES at make invocation time.
 410   --enable-neon-clobber-test check NEON registers for clobbering (should be
 411                            used only for debugging purposes)
 412   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 413                            should be used only for debugging purposes)
 414   --enable-random          randomly enable/disable components
 415   --disable-random
 416   --enable-random=LIST     randomly enable/disable specific components or
 417   --disable-random=LIST    component groups. LIST is a comma-separated list
 418                            of NAME[:PROB] entries where NAME is a component
 419                            (group) and PROB the probability associated with
 420                            NAME (default 0.5).
 421   --random-seed=VALUE      seed value for --enable/disable-random
 422   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 423                            (only applies to --disable-optimizations builds)
 424
 425 NOTE: Object files are built at the place where configure is launched.
 426 EOF
 427   exit 0
 428 }
 429
 430 quotes='""'
 431 if test -t 1 && which tput >/dev/null 2>&1; then
 432     ncolors=$(tput colors)
 433     if test -n "$ncolors" && test $ncolors -ge 8; then
 434         bold_color=$(tput bold)
 435         warn_color=$(tput setaf 3)
 436         error_color=$(tput setaf 1)
 437         reset_color=$(tput sgr0)
 438     fi
 439     # 72 used instead of 80 since that's the default of pr
 440     ncols=$(tput cols)
 441 fi
 442 : ${ncols:=72}
 443
 444 log(){
 445     echo "$@" >> $logfile
 446 }
 447
 448 log_file(){
 449     log BEGIN $1
 450     pr -n -t $1 >> $logfile
 451     log END $1
 452 }
 453
 454 warn(){
 455     log "WARNING: $*"
 456     WARNINGS="${WARNINGS}WARNING: $*\n"
 457 }
 458
 459 die(){
 460     log "$@"
 461     echo "$error_color$bold_color$@$reset_color"
 462     cat <<EOF
 463
 464 If you think configure made a mistake, make sure you are using the latest
 465 version from Git.  If the latest version fails, report the problem to the
 466 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 467 EOF
 468     if disabled logging; then
 469         cat <<EOF
 470 Rerun configure with logging enabled (do not use --disable-logging), and
 471 include the log this produces with your report.
 472 EOF
 473     else
 474         cat <<EOF
 475 Include the log file "$logfile" produced by configure as this will help
 476 solve the problem.
 477 EOF
 478     fi
 479     exit 1
 480 }
 481
 482 # Avoid locale weirdness, besides we really just want to translate ASCII.
 483 toupper(){
 484     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 485 }
 486
 487 tolower(){
 488     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 489 }
 490
 491 c_escape(){
 492     echo "$*" | sed 's/["\\]/\\\0/g'
 493 }
 494
 495 sh_quote(){
 496     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 497     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 498     echo "$v"
 499 }
 500
 501 cleanws(){
 502     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 503 }
 504
 505 filter(){
 506     pat=$1
 507     shift
 508     for v; do
 509         eval "case $v in $pat) echo $v ;; esac"
 510     done
 511 }
 512
 513 filter_out(){
 514     pat=$1
 515     shift
 516     for v; do
 517         eval "case $v in $pat) ;; *) echo $v ;; esac"
 518     done
 519 }
 520
 521 map(){
 522     m=$1
 523     shift
 524     for v; do eval $m; done
 525 }
 526
 527 add_suffix(){
 528     suffix=$1
 529     shift
 530     for v; do echo ${v}${suffix}; done
 531 }
 532
 533 set_all(){
 534     value=$1
 535     shift
 536     for var in $*; do
 537         eval $var=$value
 538     done
 539 }
 540
 541 set_weak(){
 542     value=$1
 543     shift
 544     for var; do
 545         eval : \${$var:=$value}
 546     done
 547 }
 548
 549 sanitize_var_name(){
 550     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 551 }
 552
 553 set_safe(){
 554     var=$1
 555     shift
 556     eval $(sanitize_var_name "$var")='$*'
 557 }
 558
 559 get_safe(){
 560     eval echo \$$(sanitize_var_name "$1")
 561 }
 562
 563 pushvar(){
 564     for pvar in $*; do
 565         eval level=\${${pvar}_level:=0}
 566         eval ${pvar}_${level}="\$$pvar"
 567         eval ${pvar}_level=$(($level+1))
 568     done
 569 }
 570
 571 popvar(){
 572     for pvar in $*; do
 573         eval level=\${${pvar}_level:-0}
 574         test $level = 0 && continue
 575         eval level=$(($level-1))
 576         eval $pvar="\${${pvar}_${level}}"
 577         eval ${pvar}_level=$level
 578         eval unset ${pvar}_${level}
 579     done
 580 }
 581
 582 enable(){
 583     set_all yes $*
 584 }
 585
 586 disable(){
 587     set_all no $*
 588 }
 589
 590 enable_weak(){
 591     set_weak yes $*
 592 }
 593
 594 disable_weak(){
 595     set_weak no $*
 596 }
 597
 598 enable_safe(){
 599     for var; do
 600         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 601     done
 602 }
 603
 604 disable_safe(){
 605     for var; do
 606         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 607     done
 608 }
 609
 610 do_enable_deep(){
 611     for var; do
 612         enabled $var && continue
 613         eval sel="\$${var}_select"
 614         eval sgs="\$${var}_suggest"
 615         pushvar var sgs
 616         enable_deep $sel
 617         popvar sgs
 618         enable_deep_weak $sgs
 619         popvar var
 620     done
 621 }
 622
 623 enable_deep(){
 624     do_enable_deep $*
 625     enable $*
 626 }
 627
 628 enable_deep_weak(){
 629     for var; do
 630         disabled $var && continue
 631         pushvar var
 632         do_enable_deep $var
 633         popvar var
 634         enable_weak $var
 635     done
 636 }
 637
 638 enabled(){
 639     test "${1#!}" = "$1" && op='=' || op=!=
 640     eval test "x\$${1#!}" $op "xyes"
 641 }
 642
 643 disabled(){
 644     test "${1#!}" = "$1" && op='=' || op=!=
 645     eval test "x\$${1#!}" $op "xno"
 646 }
 647
 648 enabled_all(){
 649     for opt; do
 650         enabled $opt || return 1
 651     done
 652 }
 653
 654 disabled_all(){
 655     for opt; do
 656         disabled $opt || return 1
 657     done
 658 }
 659
 660 enabled_any(){
 661     for opt; do
 662         enabled $opt && return 0
 663     done
 664 }
 665
 666 disabled_any(){
 667     for opt; do
 668         disabled $opt && return 0
 669     done
 670     return 1
 671 }
 672
 673 set_default(){
 674     for opt; do
 675         eval : \${$opt:=\$${opt}_default}
 676     done
 677 }
 678
 679 is_in(){
 680     value=$1
 681     shift
 682     for var in $*; do
 683         [ $var = $value ] && return 0
 684     done
 685     return 1
 686 }
 687
 688 do_check_deps(){
 689     for cfg; do
 690         cfg="${cfg#!}"
 691         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 692         disabled ${cfg}_checking && continue
 693         enable ${cfg}_checking
 694         append allopts $cfg
 695
 696         eval dep_all="\$${cfg}_deps"
 697         eval dep_any="\$${cfg}_deps_any"
 698         eval dep_sel="\$${cfg}_select"
 699         eval dep_sgs="\$${cfg}_suggest"
 700         eval dep_ifa="\$${cfg}_if"
 701         eval dep_ifn="\$${cfg}_if_any"
 702
 703         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 704         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 705         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 706
 707         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 708         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 709         enabled_all  $dep_all || disable $cfg
 710         enabled_any  $dep_any || disable $cfg
 711         disabled_any $dep_sel && disable $cfg
 712
 713         if enabled $cfg; then
 714             enable_deep $dep_sel
 715             enable_deep_weak $dep_sgs
 716         fi
 717
 718         disable ${cfg}_checking
 719     done
 720 }
 721
 722 check_deps(){
 723     unset allopts
 724
 725     do_check_deps "$@"
 726
 727     for cfg in $allopts; do
 728         enabled $cfg || continue
 729         eval dep_extralibs="\$${cfg}_extralibs"
 730         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 731     done
 732 }
 733
 734 print_config(){
 735     pfx=$1
 736     files=$2
 737     shift 2
 738     map 'eval echo "$v \${$v:-no}"' "$@" |
 739     awk "BEGIN { split(\"$files\", files) }
 740         {
 741             c = \"$pfx\" toupper(\$1);
 742             v = \$2;
 743             sub(/yes/, 1, v);
 744             sub(/no/,  0, v);
 745             for (f in files) {
 746                 file = files[f];
 747                 if (file ~ /\\.h\$/) {
 748                     printf(\"#define %s %d\\n\", c, v) >>file;
 749                 } else if (file ~ /\\.asm\$/) {
 750                     printf(\"%%define %s %d\\n\", c, v) >>file;
 751                 } else if (file ~ /\\.mak\$/) {
 752                     n = -v ? \"\" : \"!\";
 753                     printf(\"%s%s=yes\\n\", n, c) >>file;
 754                 } else if (file ~ /\\.texi\$/) {
 755                     pre = -v ? \"\" : \"@c \";
 756                     yesno = \$2;
 757                     c2 = tolower(c);
 758                     gsub(/_/, \"-\", c2);
 759                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 760                 }
 761             }
 762         }"
 763 }
 764
 765 print_enabled(){
 766     suf=$1
 767     shift
 768     for v; do
 769         enabled $v && printf "%s\n" ${v%$suf};
 770     done
 771 }
 772
 773 append(){
 774     var=$1
 775     shift
 776     eval "$var=\"\$$var $*\""
 777 }
 778
 779 prepend(){
 780     var=$1
 781     shift
 782     eval "$var=\"$* \$$var\""
 783 }
 784
 785 unique(){
 786     var=$1
 787     uniq_list=""
 788     for tok in $(eval echo \$$var); do
 789         uniq_list="$(filter_out $tok $uniq_list) $tok"
 790     done
 791     eval "$var=\"${uniq_list}\""
 792 }
 793
 794 add_cppflags(){
 795     append CPPFLAGS "$@"
 796 }
 797
 798 add_cflags(){
 799     append CFLAGS $($cflags_filter "$@")
 800 }
 801
 802 add_cxxflags(){
 803     append CXXFLAGS $($cflags_filter "$@")
 804 }
 805
 806 add_asflags(){
 807     append ASFLAGS $($asflags_filter "$@")
 808 }
 809
 810 add_objcflags(){
 811     append OBJCFLAGS $($objcflags_filter "$@")
 812 }
 813
 814 add_ldflags(){
 815     append LDFLAGS $($ldflags_filter "$@")
 816 }
 817
 818 add_ldexeflags(){
 819     append LDEXEFLAGS $($ldflags_filter "$@")
 820 }
 821
 822 add_ldlibflags(){
 823     append LDLIBFLAGS $($ldflags_filter "$@")
 824 }
 825
 826 add_stripflags(){
 827     append ASMSTRIPFLAGS "$@"
 828 }
 829
 830 add_extralibs(){
 831     prepend extralibs $($ldflags_filter "$@")
 832 }
 833
 834 add_host_cppflags(){
 835     append host_cppflags "$@"
 836 }
 837
 838 add_host_cflags(){
 839     append host_cflags $($host_cflags_filter "$@")
 840 }
 841
 842 add_host_ldflags(){
 843     append host_ldflags $($host_ldflags_filter "$@")
 844 }
 845
 846 add_compat(){
 847     append compat_objs $1
 848     shift
 849     map 'add_cppflags -D$v' "$@"
 850 }
 851
 852 check_cmd(){
 853     log "$@"
 854     "$@" >> $logfile 2>&1
 855 }
 856
 857 check_stat(){
 858     log check_stat "$@"
 859     stat "$1" >> $logfile 2>&1
 860 }
 861
 862 cc_o(){
 863     eval printf '%s\\n' $CC_O
 864 }
 865
 866 cc_e(){
 867     eval printf '%s\\n' $CC_E
 868 }
 869
 870 check_cc(){
 871     log check_cc "$@"
 872     cat > $TMPC
 873     log_file $TMPC
 874     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 875 }
 876
 877 check_cxx(){
 878     log check_cxx "$@"
 879     cat > $TMPCPP
 880     log_file $TMPCPP
 881     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 882 }
 883
 884 check_objcc(){
 885     log check_objcc "$@"
 886     cat > $TMPM
 887     log_file $TMPM
 888     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 889 }
 890
 891 check_cpp(){
 892     log check_cpp "$@"
 893     cat > $TMPC
 894     log_file $TMPC
 895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 896 }
 897
 898 as_o(){
 899     eval printf '%s\\n' $AS_O
 900 }
 901
 902 check_as(){
 903     log check_as "$@"
 904     cat > $TMPS
 905     log_file $TMPS
 906     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 907 }
 908
 909 check_inline_asm(){
 910     log check_inline_asm "$@"
 911     name="$1"
 912     code="$2"
 913     shift 2
 914     disable $name
 915     check_cc "$@" <<EOF && enable $name
 916 void foo(void){ __asm__ volatile($code); }
 917 EOF
 918 }
 919
 920 check_insn(){
 921     log check_insn "$@"
 922     check_inline_asm ${1}_inline "\"$2\""
 923     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 924 }
 925
 926 check_yasm(){
 927     log check_yasm "$@"
 928     echo "$1" > $TMPS
 929     log_file $TMPS
 930     shift 1
 931     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 932 }
 933
 934 ld_o(){
 935     eval printf '%s\\n' $LD_O
 936 }
 937
 938 check_ld(){
 939     log check_ld "$@"
 940     type=$1
 941     shift 1
 942     flags=$(filter_out '-l*|*.so' $@)
 943     libs=$(filter '-l*|*.so' $@)
 944     check_$type $($cflags_filter $flags) || return
 945     flags=$($ldflags_filter $flags)
 946     libs=$($ldflags_filter $libs)
 947     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 948 }
 949
 950 print_include(){
 951     hdr=$1
 952     test "${hdr%.h}" = "${hdr}" &&
 953         echo "#include $hdr"    ||
 954         echo "#include <$hdr>"
 955 }
 956
 957 check_code(){
 958     log check_code "$@"
 959     check=$1
 960     headers=$2
 961     code=$3
 962     shift 3
 963     {
 964         for hdr in $headers; do
 965             print_include $hdr
 966         done
 967         echo "int main(void) { $code; return 0; }"
 968     } | check_$check "$@"
 969 }
 970
 971 check_cppflags(){
 972     log check_cppflags "$@"
 973     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 974 int x;
 975 EOF
 976 }
 977
 978 test_cflags(){
 979     log test_cflags "$@"
 980     set -- $($cflags_filter "$@")
 981     check_cc "$@" <<EOF
 982 int x;
 983 EOF
 984 }
 985
 986 check_cflags(){
 987     log check_cflags "$@"
 988     test_cflags "$@" && add_cflags "$@"
 989 }
 990
 991 check_cxxflags(){
 992     log check_cxxflags "$@"
 993     set -- $($cflags_filter "$@")
 994     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 995 int x;
 996 EOF
 997 }
 998
 999 test_objcflags(){
1000     log test_cflags "$@"
1001     set -- $($cflags_filter "$@")
1002     check_objcc "$@" <<EOF
1003 int x;
1004 EOF
1005 }
1006
1007 check_objcflags(){
1008     log check_cflags "$@"
1009     test_objcflags "$@" && add_objcflags "$@"
1010 }
1011
1012 test_ldflags(){
1013     log test_ldflags "$@"
1014     check_ld "cc" "$@" <<EOF
1015 int main(void){ return 0; }
1016 EOF
1017 }
1018
1019 check_ldflags(){
1020     log check_ldflags "$@"
1021     test_ldflags "$@" && add_ldflags "$@"
1022 }
1023
1024 test_stripflags(){
1025     log test_stripflags "$@"
1026     # call check_cc to get a fresh TMPO
1027     check_cc <<EOF
1028 int main(void) { return 0; }
1029 EOF
1030     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1031 }
1032
1033 check_stripflags(){
1034     log check_stripflags "$@"
1035     test_stripflags "$@" && add_stripflags "$@"
1036 }
1037
1038 check_header(){
1039     log check_header "$@"
1040     header=$1
1041     shift
1042     disable_safe $header
1043     check_cpp "$@" <<EOF && enable_safe $header
1044 #include <$header>
1045 int x;
1046 EOF
1047 }
1048
1049 check_header_objcc(){
1050     log check_header_objcc "$@"
1051     rm -f -- "$TMPO"
1052     header=$1
1053     shift
1054     disable_safe $header
1055     {
1056        echo "#include <$header>"
1057        echo "int main(void) { return 0; }"
1058     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1059 }
1060
1061 check_func(){
1062     log check_func "$@"
1063     func=$1
1064     shift
1065     disable $func
1066     check_ld "cc" "$@" <<EOF && enable $func
1067 extern int $func();
1068 int main(void){ $func(); }
1069 EOF
1070 }
1071
1072 check_complexfunc(){
1073     log check_complexfunc "$@"
1074     func=$1
1075     narg=$2
1076     shift 2
1077     test $narg = 2 && args="f, g" || args="f * I"
1078     disable $func
1079     check_ld "cc" "$@" <<EOF && enable $func
1080 #include <complex.h>
1081 #include <math.h>
1082 float foo(complex float f, complex float g) { return $func($args); }
1083 int main(void){ return (int) foo; }
1084 EOF
1085 }
1086
1087 check_mathfunc(){
1088     log check_mathfunc "$@"
1089     func=$1
1090     narg=$2
1091     shift 2
1092     test $narg = 2 && args="f, g" || args="f"
1093     disable $func
1094     check_ld "cc" "$@" <<EOF && enable $func
1095 #include <math.h>
1096 float foo(float f, float g) { return $func($args); }
1097 int main(void){ return (int) foo; }
1098 EOF
1099 }
1100
1101 check_func_headers(){
1102     log check_func_headers "$@"
1103     headers=$1
1104     funcs=$2
1105     shift 2
1106     {
1107         for hdr in $headers; do
1108             print_include $hdr
1109         done
1110         for func in $funcs; do
1111             echo "long check_$func(void) { return (long) $func; }"
1112         done
1113         echo "int main(void) { return 0; }"
1114     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1115 }
1116
1117 check_class_headers_cpp(){
1118     log check_class_headers_cpp "$@"
1119     headers=$1
1120     classes=$2
1121     shift 2
1122     {
1123         for hdr in $headers; do
1124             echo "#include <$hdr>"
1125         done
1126         echo "int main(void) { "
1127         i=1
1128         for class in $classes; do
1129             echo "$class obj$i;"
1130             i=$(expr $i + 1)
1131         done
1132         echo "return 0; }"
1133     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1134 }
1135
1136 check_cpp_condition(){
1137     log check_cpp_condition "$@"
1138     header=$1
1139     condition=$2
1140     shift 2
1141     check_cpp "$@" <<EOF
1142 #include <$header>
1143 #if !($condition)
1144 #error "unsatisfied condition: $condition"
1145 #endif
1146 EOF
1147 }
1148
1149 check_lib(){
1150     log check_lib "$@"
1151     header="$1"
1152     func="$2"
1153     shift 2
1154     check_header $header && check_func $func "$@" && add_extralibs "$@"
1155 }
1156
1157 check_lib2(){
1158     log check_lib2 "$@"
1159     headers="$1"
1160     funcs="$2"
1161     shift 2
1162     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1163 }
1164
1165 check_lib_cpp(){
1166     log check_lib_cpp "$@"
1167     headers="$1"
1168     classes="$2"
1169     shift 2
1170     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1171 }
1172
1173 check_pkg_config(){
1174     log check_pkg_config "$@"
1175     pkgandversion="$1"
1176     pkg="${1%% *}"
1177     headers="$2"
1178     funcs="$3"
1179     shift 3
1180     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1181     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1182     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1183     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1184         set_safe "${pkg}_cflags" $pkg_cflags   &&
1185         set_safe "${pkg}_libs"   $pkg_libs
1186 }
1187
1188 check_exec(){
1189     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1190 }
1191
1192 check_exec_crash(){
1193     code=$(cat)
1194
1195     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1196     # are safe but may not be available everywhere.  Thus we use
1197     # raise(SIGTERM) instead.  The check is run in a subshell so we
1198     # can redirect the "Terminated" message from the shell.  SIGBUS
1199     # is not defined by standard C so it is used conditionally.
1200
1201     (check_exec "$@") >> $logfile 2>&1 <<EOF
1202 #include <signal.h>
1203 static void sighandler(int sig){
1204     raise(SIGTERM);
1205 }
1206 int foo(void){
1207     $code
1208 }
1209 int (*func_ptr)(void) = foo;
1210 int main(void){
1211     signal(SIGILL, sighandler);
1212     signal(SIGFPE, sighandler);
1213     signal(SIGSEGV, sighandler);
1214 #ifdef SIGBUS
1215     signal(SIGBUS, sighandler);
1216 #endif
1217     return func_ptr();
1218 }
1219 EOF
1220 }
1221
1222 check_type(){
1223     log check_type "$@"
1224     headers=$1
1225     type=$2
1226     shift 2
1227     disable_safe "$type"
1228     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1229 }
1230
1231 check_struct(){
1232     log check_struct "$@"
1233     headers=$1
1234     struct=$2
1235     member=$3
1236     shift 3
1237     disable_safe "${struct}_${member}"
1238     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1239         enable_safe "${struct}_${member}"
1240 }
1241
1242 check_builtin(){
1243     log check_builtin "$@"
1244     name=$1
1245     headers=$2
1246     builtin=$3
1247     shift 3
1248     disable "$name"
1249     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1250 }
1251
1252 check_compile_assert(){
1253     log check_compile_assert "$@"
1254     name=$1
1255     headers=$2
1256     condition=$3
1257     shift 3
1258     disable "$name"
1259     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1260 }
1261
1262 require(){
1263     name="$1"
1264     header="$2"
1265     func="$3"
1266     shift 3
1267     check_lib $header $func "$@" || die "ERROR: $name not found"
1268 }
1269
1270 require2(){
1271     name="$1"
1272     headers="$2"
1273     func="$3"
1274     shift 3
1275     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1276 }
1277
1278 require_cpp(){
1279     name="$1"
1280     headers="$2"
1281     classes="$3"
1282     shift 3
1283     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1284 }
1285
1286 use_pkg_config(){
1287     pkg="$1"
1288     check_pkg_config "$@" || return 1
1289     add_cflags    $(get_safe "${pkg}_cflags")
1290     add_extralibs $(get_safe "${pkg}_libs")
1291 }
1292
1293 require_pkg_config(){
1294     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1295 }
1296
1297 require_libfreetype(){
1298     log require_libfreetype "$@"
1299     pkg="freetype2"
1300     check_cmd $pkg_config --exists --print-errors $pkg \
1301       || die "ERROR: $pkg not found"
1302     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1303     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1304     {
1305         echo "#include <ft2build.h>"
1306         echo "#include FT_FREETYPE_H"
1307         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1308         echo "int main(void) { return 0; }"
1309     } | check_ld "cc" $pkg_cflags $pkg_libs \
1310       && set_safe "${pkg}_cflags" $pkg_cflags \
1311       && set_safe "${pkg}_libs"   $pkg_libs \
1312       || die "ERROR: $pkg not found"
1313     add_cflags    $(get_safe "${pkg}_cflags")
1314     add_extralibs $(get_safe "${pkg}_libs")
1315 }
1316
1317 hostcc_e(){
1318     eval printf '%s\\n' $HOSTCC_E
1319 }
1320
1321 hostcc_o(){
1322     eval printf '%s\\n' $HOSTCC_O
1323 }
1324
1325 check_host_cc(){
1326     log check_host_cc "$@"
1327     cat > $TMPC
1328     log_file $TMPC
1329     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1330 }
1331
1332 check_host_cpp(){
1333     log check_host_cpp "$@"
1334     cat > $TMPC
1335     log_file $TMPC
1336     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1337 }
1338
1339 check_host_cppflags(){
1340     log check_host_cppflags "$@"
1341     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1342 int x;
1343 EOF
1344 }
1345
1346 check_host_cflags(){
1347     log check_host_cflags "$@"
1348     set -- $($host_cflags_filter "$@")
1349     check_host_cc "$@" <<EOF && append host_cflags "$@"
1350 int x;
1351 EOF
1352 }
1353
1354 check_host_cpp_condition(){
1355     log check_host_cpp_condition "$@"
1356     header=$1
1357     condition=$2
1358     shift 2
1359     check_host_cpp "$@" <<EOF
1360 #include <$header>
1361 #if !($condition)
1362 #error "unsatisfied condition: $condition"
1363 #endif
1364 EOF
1365 }
1366
1367 cp_if_changed(){
1368     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1369     mkdir -p "$(dirname $2)"
1370     $cp_f "$1" "$2"
1371 }
1372
1373 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1374 # system-dependent things.
1375
1376 AVCODEC_COMPONENTS="
1377     bsfs
1378     decoders
1379     encoders
1380     hwaccels
1381     parsers
1382 "
1383
1384 AVDEVICE_COMPONENTS="
1385     indevs
1386     outdevs
1387 "
1388 AVFILTER_COMPONENTS="
1389     filters
1390 "
1391 AVFORMAT_COMPONENTS="
1392     demuxers
1393     muxers
1394     protocols
1395 "
1396
1397 AVRESAMPLE_COMPONENTS=""
1398 AVUTIL_COMPONENTS=""
1399
1400 COMPONENT_LIST="
1401     $AVCODEC_COMPONENTS
1402     $AVDEVICE_COMPONENTS
1403     $AVFILTER_COMPONENTS
1404     $AVFORMAT_COMPONENTS
1405     $AVRESAMPLE_COMPONENTS
1406     $AVUTIL_COMPONENTS
1407 "
1408
1409 EXAMPLE_LIST="
1410     avio_reading_example
1411     avio_dir_cmd_example
1412     decoding_encoding_example
1413     demuxing_decoding_example
1414     extract_mvs_example
1415     filter_audio_example
1416     filtering_audio_example
1417     filtering_video_example
1418     metadata_example
1419     muxing_example
1420     qsvdec_example
1421     remuxing_example
1422     resampling_audio_example
1423     scaling_video_example
1424     transcode_aac_example
1425     transcoding_example
1426 "
1427
1428 EXTERNAL_LIBRARY_LIST="
1429     avisynth
1430     bzlib
1431     chromaprint
1432     crystalhd
1433     decklink
1434     frei0r
1435     gcrypt
1436     gmp
1437     gnutls
1438     iconv
1439     ladspa
1440     libaacplus
1441     libass
1442     libbluray
1443     libbs2b
1444     libcaca
1445     libcdio
1446     libcelt
1447     libdc1394
1448     libdcadec
1449     libfaac
1450     libfdk_aac
1451     libflite
1452     libfontconfig
1453     libfreetype
1454     libfribidi
1455     libgme
1456     libgsm
1457     libiec61883
1458     libilbc
1459     libkvazaar
1460     libmfx
1461     libmodplug
1462     libmp3lame
1463     libnut
1464     libopencore_amrnb
1465     libopencore_amrwb
1466     libopencv
1467     libopenh264
1468     libopenjpeg
1469     libopus
1470     libpulse
1471     libquvi
1472     librtmp
1473     librubberband
1474     libschroedinger
1475     libshine
1476     libsmbclient
1477     libsnappy
1478     libsoxr
1479     libspeex
1480     libssh
1481     libstagefright_h264
1482     libtesseract
1483     libtheora
1484     libtwolame
1485     libutvideo
1486     libv4l2
1487     libvidstab
1488     libvo_aacenc
1489     libvo_amrwbenc
1490     libvorbis
1491     libvpx
1492     libwavpack
1493     libwebp
1494     libx264
1495     libx265
1496     libxavs
1497     libxcb
1498     libxcb_shm
1499     libxcb_shape
1500     libxcb_xfixes
1501     libxvid
1502     libzimg
1503     libzmq
1504     libzvbi
1505     lzma
1506     mmal
1507     netcdf
1508     nvenc
1509     openal
1510     opencl
1511     opengl
1512     openssl
1513     schannel
1514     sdl
1515     securetransport
1516     x11grab
1517     xlib
1518     zlib
1519 "
1520
1521 DOCUMENT_LIST="
1522     doc
1523     htmlpages
1524     manpages
1525     podpages
1526     txtpages
1527 "
1528
1529 FEATURE_LIST="
1530     ftrapv
1531     gray
1532     hardcoded_tables
1533     runtime_cpudetect
1534     safe_bitstream_reader
1535     shared
1536     small
1537     static
1538     swscale_alpha
1539 "
1540
1541 HWACCEL_LIST="
1542     d3d11va
1543     dxva2
1544     vaapi
1545     vda
1546     vdpau
1547     videotoolbox
1548     xvmc
1549 "
1550
1551 LIBRARY_LIST="
1552     avcodec
1553     avdevice
1554     avfilter
1555     avformat
1556     avresample
1557     avutil
1558     postproc
1559     swresample
1560     swscale
1561 "
1562
1563 LICENSE_LIST="
1564     gpl
1565     nonfree
1566     version3
1567 "
1568
1569 PROGRAM_LIST="
1570     ffplay
1571     ffprobe
1572     ffserver
1573     ffmpeg
1574 "
1575
1576 SUBSYSTEM_LIST="
1577     dct
1578     dwt
1579     error_resilience
1580     faan
1581     fast_unaligned
1582     fft
1583     lsp
1584     lzo
1585     mdct
1586     pixelutils
1587     network
1588     rdft
1589 "
1590
1591 CONFIG_LIST="
1592     $COMPONENT_LIST
1593     $DOCUMENT_LIST
1594     $EXAMPLE_LIST
1595     $EXTERNAL_LIBRARY_LIST
1596     $FEATURE_LIST
1597     $HWACCEL_LIST
1598     $LICENSE_LIST
1599     $LIBRARY_LIST
1600     $PROGRAM_LIST
1601     $SUBSYSTEM_LIST
1602     fontconfig
1603     incompatible_libav_abi
1604     memalign_hack
1605     memory_poisoning
1606     neon_clobber_test
1607     pic
1608     pod2man
1609     raise_major
1610     thumb
1611     valgrind_backtrace
1612     xmm_clobber_test
1613 "
1614
1615 THREADS_LIST="
1616     pthreads
1617     os2threads
1618     w32threads
1619 "
1620
1621 ATOMICS_LIST="
1622     atomics_gcc
1623     atomics_suncc
1624     atomics_win32
1625 "
1626
1627 ARCH_LIST="
1628     aarch64
1629     alpha
1630     arm
1631     avr32
1632     avr32_ap
1633     avr32_uc
1634     bfin
1635     ia64
1636     m68k
1637     mips
1638     mips64
1639     parisc
1640     ppc
1641     ppc64
1642     s390
1643     sh4
1644     sparc
1645     sparc64
1646     tilegx
1647     tilepro
1648     tomi
1649     x86
1650     x86_32
1651     x86_64
1652 "
1653
1654 ARCH_EXT_LIST_ARM="
1655     armv5te
1656     armv6
1657     armv6t2
1658     armv8
1659     neon
1660     vfp
1661     vfpv3
1662     setend
1663 "
1664
1665 ARCH_EXT_LIST_MIPS="
1666     mipsfpu
1667     mips32r2
1668     mips64r2
1669     mips64r6
1670     mipsdsp
1671     mipsdspr2
1672     msa
1673 "
1674
1675 ARCH_EXT_LIST_LOONGSON="
1676     loongson2
1677     loongson3
1678     mmi
1679 "
1680
1681 ARCH_EXT_LIST_X86_SIMD="
1682     aesni
1683     amd3dnow
1684     amd3dnowext
1685     avx
1686     avx2
1687     fma3
1688     fma4
1689     mmx
1690     mmxext
1691     sse
1692     sse2
1693     sse3
1694     sse4
1695     sse42
1696     ssse3
1697     xop
1698 "
1699
1700 ARCH_EXT_LIST_PPC="
1701     altivec
1702     dcbzl
1703     ldbrx
1704     power8
1705     ppc4xx
1706     vsx
1707 "
1708
1709 ARCH_EXT_LIST_X86="
1710     $ARCH_EXT_LIST_X86_SIMD
1711     cpunop
1712     i686
1713 "
1714
1715 ARCH_EXT_LIST="
1716     $ARCH_EXT_LIST_ARM
1717     $ARCH_EXT_LIST_PPC
1718     $ARCH_EXT_LIST_X86
1719     $ARCH_EXT_LIST_MIPS
1720     $ARCH_EXT_LIST_LOONGSON
1721 "
1722
1723 ARCH_FEATURES="
1724     aligned_stack
1725     fast_64bit
1726     fast_clz
1727     fast_cmov
1728     local_aligned_8
1729     local_aligned_16
1730     local_aligned_32
1731     simd_align_16
1732 "
1733
1734 BUILTIN_LIST="
1735     atomic_cas_ptr
1736     atomic_compare_exchange
1737     machine_rw_barrier
1738     MemoryBarrier
1739     mm_empty
1740     rdtsc
1741     sarestart
1742     sync_val_compare_and_swap
1743 "
1744 HAVE_LIST_CMDLINE="
1745     inline_asm
1746     symver
1747     yasm
1748 "
1749
1750 HAVE_LIST_PUB="
1751     bigendian
1752     fast_unaligned
1753     incompatible_libav_abi
1754 "
1755
1756 HEADERS_LIST="
1757     alsa_asoundlib_h
1758     altivec_h
1759     arpa_inet_h
1760     asm_types_h
1761     cdio_paranoia_h
1762     cdio_paranoia_paranoia_h
1763     dev_bktr_ioctl_bt848_h
1764     dev_bktr_ioctl_meteor_h
1765     dev_ic_bt8xx_h
1766     dev_video_bktr_ioctl_bt848_h
1767     dev_video_meteor_ioctl_meteor_h
1768     direct_h
1769     dirent_h
1770     dlfcn_h
1771     d3d11_h
1772     dxva_h
1773     ES2_gl_h
1774     gsm_h
1775     io_h
1776     mach_mach_time_h
1777     machine_ioctl_bt848_h
1778     machine_ioctl_meteor_h
1779     malloc_h
1780     openjpeg_1_5_openjpeg_h
1781     OpenGL_gl3_h
1782     poll_h
1783     sndio_h
1784     soundcard_h
1785     sys_mman_h
1786     sys_param_h
1787     sys_resource_h
1788     sys_select_h
1789     sys_soundcard_h
1790     sys_time_h
1791     sys_un_h
1792     sys_videoio_h
1793     termios_h
1794     udplite_h
1795     unistd_h
1796     valgrind_valgrind_h
1797     windows_h
1798     winsock2_h
1799 "
1800
1801 INTRINSICS_LIST="
1802     intrinsics_neon
1803 "
1804
1805 COMPLEX_FUNCS="
1806     cabs
1807     cexp
1808 "
1809
1810 MATH_FUNCS="
1811     atanf
1812     atan2f
1813     cbrt
1814     cbrtf
1815     copysign
1816     cosf
1817     erf
1818     exp2
1819     exp2f
1820     expf
1821     hypot
1822     isinf
1823     isnan
1824     ldexpf
1825     llrint
1826     llrintf
1827     log2
1828     log2f
1829     log10f
1830     lrint
1831     lrintf
1832     powf
1833     rint
1834     round
1835     roundf
1836     sinf
1837     trunc
1838     truncf
1839 "
1840
1841 SYSTEM_FUNCS="
1842     access
1843     aligned_malloc
1844     clock_gettime
1845     closesocket
1846     CommandLineToArgvW
1847     CoTaskMemFree
1848     CryptGenRandom
1849     dlopen
1850     fcntl
1851     flt_lim
1852     fork
1853     getaddrinfo
1854     gethrtime
1855     getopt
1856     GetProcessAffinityMask
1857     GetProcessMemoryInfo
1858     GetProcessTimes
1859     getrusage
1860     GetSystemTimeAsFileTime
1861     gettimeofday
1862     glob
1863     glXGetProcAddress
1864     gmtime_r
1865     inet_aton
1866     isatty
1867     jack_port_get_latency_range
1868     kbhit
1869     localtime_r
1870     lstat
1871     lzo1x_999_compress
1872     mach_absolute_time
1873     MapViewOfFile
1874     memalign
1875     mkstemp
1876     mmap
1877     mprotect
1878     nanosleep
1879     PeekNamedPipe
1880     posix_memalign
1881     pthread_cancel
1882     sched_getaffinity
1883     SetConsoleTextAttribute
1884     SetConsoleCtrlHandler
1885     setmode
1886     setrlimit
1887     Sleep
1888     strerror_r
1889     sysconf
1890     sysctl
1891     usleep
1892     UTGetOSTypeFromString
1893     VirtualAlloc
1894     wglGetProcAddress
1895 "
1896
1897 TOOLCHAIN_FEATURES="
1898     as_dn_directive
1899     as_func
1900     as_object_arch
1901     asm_mod_q
1902     attribute_may_alias
1903     attribute_packed
1904     ebp_available
1905     ebx_available
1906     gnu_as
1907     gnu_windres
1908     ibm_asm
1909     inline_asm_labels
1910     inline_asm_nonlocal_labels
1911     inline_asm_direct_symbol_refs
1912     pragma_deprecated
1913     rsync_contimeout
1914     symver_asm_label
1915     symver_gnu_asm
1916     vfp_args
1917     xform_asm
1918     xmm_clobbers
1919 "
1920
1921 TYPES_LIST="
1922     CONDITION_VARIABLE_Ptr
1923     socklen_t
1924     struct_addrinfo
1925     struct_group_source_req
1926     struct_ip_mreq_source
1927     struct_ipv6_mreq
1928     struct_pollfd
1929     struct_rusage_ru_maxrss
1930     struct_sctp_event_subscribe
1931     struct_sockaddr_in6
1932     struct_sockaddr_sa_len
1933     struct_sockaddr_storage
1934     struct_stat_st_mtim_tv_nsec
1935     struct_v4l2_frmivalenum_discrete
1936 "
1937
1938 HAVE_LIST="
1939     $ARCH_EXT_LIST
1940     $(add_suffix _external $ARCH_EXT_LIST)
1941     $(add_suffix _inline   $ARCH_EXT_LIST)
1942     $ARCH_FEATURES
1943     $ATOMICS_LIST
1944     $BUILTIN_LIST
1945     $COMPLEX_FUNCS
1946     $HAVE_LIST_CMDLINE
1947     $HAVE_LIST_PUB
1948     $HEADERS_LIST
1949     $INTRINSICS_LIST
1950     $MATH_FUNCS
1951     $SYSTEM_FUNCS
1952     $THREADS_LIST
1953     $TOOLCHAIN_FEATURES
1954     $TYPES_LIST
1955     atomics_native
1956     dos_paths
1957     dxva2api_cobj
1958     dxva2_lib
1959     winrt
1960     libc_msvcrt
1961     libdc1394_1
1962     libdc1394_2
1963     makeinfo
1964     makeinfo_html
1965     perl
1966     pod2man
1967     sdl
1968     section_data_rel_ro
1969     texi2html
1970     threads
1971     vaapi_x11
1972     vdpau_x11
1973     xlib
1974 "
1975
1976 # options emitted with CONFIG_ prefix but not available on the command line
1977 CONFIG_EXTRA="
1978     aandcttables
1979     ac3dsp
1980     audio_frame_queue
1981     audiodsp
1982     blockdsp
1983     bswapdsp
1984     cabac
1985     dvprofile
1986     exif
1987     faandct
1988     faanidct
1989     fdctdsp
1990     flacdsp
1991     fmtconvert
1992     frame_thread_encoder
1993     g722dsp
1994     golomb
1995     gplv3
1996     h263dsp
1997     h264chroma
1998     h264dsp
1999     h264pred
2000     h264qpel
2001     hpeldsp
2002     huffman
2003     huffyuvdsp
2004     huffyuvencdsp
2005     idctdsp
2006     iirfilter
2007     imdct15
2008     intrax8
2009     ividsp
2010     jpegtables
2011     libx262
2012     lgplv3
2013     llauddsp
2014     llviddsp
2015     lpc
2016     lzf
2017     me_cmp
2018     mpeg_er
2019     mpegaudio
2020     mpegaudiodsp
2021     mpegvideo
2022     mpegvideoenc
2023     mss34dsp
2024     pixblockdsp
2025     qpeldsp
2026     qsv
2027     qsvdec
2028     qsvenc
2029     rangecoder
2030     riffdec
2031     riffenc
2032     rtpdec
2033     rtpenc_chain
2034     rv34dsp
2035     sinewin
2036     snappy
2037     startcode
2038     texturedsp
2039     texturedspenc
2040     tpeldsp
2041     videodsp
2042     vp3dsp
2043     vp56dsp
2044     vp8dsp
2045     wma_freqs
2046     wmv2dsp
2047 "
2048
2049 CMDLINE_SELECT="
2050     $ARCH_EXT_LIST
2051     $CONFIG_LIST
2052     $HAVE_LIST_CMDLINE
2053     $THREADS_LIST
2054     asm
2055     cross_compile
2056     debug
2057     extra_warnings
2058     logging
2059     lto
2060     optimizations
2061     rpath
2062     stripping
2063 "
2064
2065 PATHS_LIST="
2066     bindir
2067     datadir
2068     docdir
2069     incdir
2070     libdir
2071     mandir
2072     pkgconfigdir
2073     prefix
2074     shlibdir
2075 "
2076
2077 CMDLINE_SET="
2078     $PATHS_LIST
2079     ar
2080     arch
2081     as
2082     assert_level
2083     build_suffix
2084     cc
2085     objcc
2086     cpu
2087     cross_prefix
2088     custom_allocator
2089     cxx
2090     dep_cc
2091     doxygen
2092     env
2093     extra_version
2094     gas
2095     host_cc
2096     host_cflags
2097     host_ld
2098     host_ldflags
2099     host_libs
2100     host_os
2101     install
2102     ld
2103     logfile
2104     malloc_prefix
2105     nm
2106     optflags
2107     pkg_config
2108     pkg_config_flags
2109     progs_suffix
2110     random_seed
2111     ranlib
2112     samples
2113     strip
2114     sws_max_filter_size
2115     sysinclude
2116     sysroot
2117     target_exec
2118     target_os
2119     target_path
2120     target_samples
2121     tempprefix
2122     toolchain
2123     valgrind
2124     yasmexe
2125 "
2126
2127 CMDLINE_APPEND="
2128     extra_cflags
2129     extra_cxxflags
2130     extra_objcflags
2131     host_cppflags
2132 "
2133
2134 # code dependency declarations
2135
2136 # architecture extensions
2137
2138 armv5te_deps="arm"
2139 armv6_deps="arm"
2140 armv6t2_deps="arm"
2141 armv8_deps="aarch64"
2142 neon_deps_any="aarch64 arm"
2143 intrinsics_neon_deps="neon"
2144 vfp_deps_any="aarch64 arm"
2145 vfpv3_deps="vfp"
2146 setend_deps="arm"
2147
2148 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2149
2150 mipsfpu_deps="mips"
2151 mipsdsp_deps="mips"
2152 mipsdspr2_deps="mips"
2153 mips32r2_deps="mips"
2154 mips64r2_deps="mips"
2155 mips64r6_deps="mips"
2156 msa_deps="mips"
2157 mmi_deps="mips"
2158
2159 altivec_deps="ppc"
2160 dcbzl_deps="ppc"
2161 ldbrx_deps="ppc"
2162 ppc4xx_deps="ppc"
2163 vsx_deps="altivec"
2164 power8_deps="vsx"
2165
2166 cpunop_deps="i686"
2167 x86_64_select="i686"
2168 x86_64_suggest="fast_cmov"
2169
2170 amd3dnow_deps="mmx"
2171 amd3dnowext_deps="amd3dnow"
2172 i686_deps="x86"
2173 mmx_deps="x86"
2174 mmxext_deps="mmx"
2175 sse_deps="mmxext"
2176 sse2_deps="sse"
2177 sse3_deps="sse2"
2178 ssse3_deps="sse3"
2179 sse4_deps="ssse3"
2180 sse42_deps="sse4"
2181 aesni_deps="sse42"
2182 avx_deps="sse42"
2183 xop_deps="avx"
2184 fma3_deps="avx"
2185 fma4_deps="avx"
2186 avx2_deps="avx"
2187
2188 mmx_external_deps="yasm"
2189 mmx_inline_deps="inline_asm"
2190 mmx_suggest="mmx_external mmx_inline"
2191
2192 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2193     eval dep=\$${ext}_deps
2194     eval ${ext}_external_deps='"${dep}_external"'
2195     eval ${ext}_inline_deps='"${dep}_inline"'
2196     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2197 done
2198
2199 aligned_stack_if_any="aarch64 ppc x86"
2200 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2201 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2202 fast_unaligned_if_any="aarch64 ppc x86"
2203 simd_align_16_if_any="altivec neon sse"
2204
2205 # system capabilities
2206 symver_if_any="symver_asm_label symver_gnu_asm"
2207 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2208
2209 # threading support
2210 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2211 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2212 atomics_win32_if="MemoryBarrier"
2213 atomics_native_if_any="$ATOMICS_LIST"
2214 w32threads_deps="atomics_native"
2215 threads_if_any="$THREADS_LIST"
2216
2217 # subsystems
2218 dct_select="rdft"
2219 error_resilience_select="me_cmp"
2220 faandct_deps="faan fdctdsp"
2221 faanidct_deps="faan idctdsp"
2222 frame_thread_encoder_deps="encoders threads"
2223 intrax8_select="error_resilience"
2224 mdct_select="fft"
2225 rdft_select="fft"
2226 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2227 mpeg_er_select="error_resilience"
2228 mpegaudio_select="mpegaudiodsp"
2229 mpegaudiodsp_select="dct"
2230 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2231 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2232 qsvdec_select="qsv"
2233 qsvenc_select="qsv"
2234
2235 # decoders / encoders
2236 aac_decoder_select="imdct15 mdct sinewin"
2237 aac_fixed_decoder_select="mdct sinewin"
2238 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2239 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2240 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2241 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2242 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2243 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2244 adpcm_g722_decoder_select="g722dsp"
2245 adpcm_g722_encoder_select="g722dsp"
2246 aic_decoder_select="golomb idctdsp"
2247 alac_encoder_select="lpc"
2248 als_decoder_select="bswapdsp"
2249 amrnb_decoder_select="lsp"
2250 amrwb_decoder_select="lsp"
2251 amv_decoder_select="sp5x_decoder exif"
2252 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2253 ape_decoder_select="bswapdsp llauddsp"
2254 apng_decoder_select="zlib"
2255 apng_encoder_select="huffyuvencdsp zlib"
2256 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2257 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2258 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2259 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2260 atrac1_decoder_select="mdct sinewin"
2261 atrac3_decoder_select="mdct"
2262 atrac3p_decoder_select="mdct sinewin"
2263 avrn_decoder_select="exif jpegtables"
2264 bink_decoder_select="blockdsp hpeldsp"
2265 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2266 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2267 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2268 cllc_decoder_select="bswapdsp"
2269 comfortnoise_encoder_select="lpc"
2270 cook_decoder_select="audiodsp mdct sinewin"
2271 cscd_decoder_select="lzo"
2272 cscd_decoder_suggest="zlib"
2273 dca_decoder_select="fmtconvert mdct"
2274 dds_decoder_select="texturedsp"
2275 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2276 dnxhd_decoder_select="blockdsp idctdsp"
2277 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2278 dvvideo_decoder_select="dvprofile idctdsp"
2279 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2280 dxa_decoder_select="zlib"
2281 dxv_decoder_select="lzf texturedsp"
2282 eac3_decoder_select="ac3_decoder"
2283 eac3_encoder_select="ac3_encoder"
2284 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2285 eatgq_decoder_select="aandcttables"
2286 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2287 exr_decoder_select="zlib"
2288 ffv1_decoder_select="golomb rangecoder"
2289 ffv1_encoder_select="rangecoder"
2290 ffvhuff_decoder_select="huffyuv_decoder"
2291 ffvhuff_encoder_select="huffyuv_encoder"
2292 fic_decoder_select="golomb"
2293 flac_decoder_select="flacdsp golomb"
2294 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2295 flashsv_decoder_select="zlib"
2296 flashsv_encoder_select="zlib"
2297 flashsv2_encoder_select="zlib"
2298 flashsv2_decoder_select="zlib"
2299 flv_decoder_select="h263_decoder"
2300 flv_encoder_select="h263_encoder"
2301 fourxm_decoder_select="blockdsp bswapdsp"
2302 fraps_decoder_select="bswapdsp huffman"
2303 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2304 g729_decoder_select="audiodsp"
2305 h261_decoder_select="mpegvideo"
2306 h261_encoder_select="aandcttables mpegvideoenc"
2307 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2308 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2309 h263i_decoder_select="h263_decoder"
2310 h263p_decoder_select="h263_decoder"
2311 h263p_encoder_select="h263_encoder"
2312 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2313 h264_decoder_suggest="error_resilience"
2314 h264_qsv_decoder_deps="libmfx"
2315 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2316 h264_qsv_encoder_deps="libmfx"
2317 h264_qsv_encoder_select="qsvenc"
2318 hap_decoder_select="snappy texturedsp"
2319 hap_encoder_deps="libsnappy"
2320 hap_encoder_select="texturedspenc"
2321 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2322 hevc_qsv_encoder_deps="libmfx"
2323 hevc_qsv_decoder_deps="libmfx"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2325 hevc_qsv_encoder_select="qsvenc"
2326 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2327 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2328 iac_decoder_select="imc_decoder"
2329 imc_decoder_select="bswapdsp fft mdct sinewin"
2330 indeo3_decoder_select="hpeldsp"
2331 indeo4_decoder_select="ividsp"
2332 indeo5_decoder_select="ividsp"
2333 interplay_video_decoder_select="hpeldsp"
2334 jpegls_decoder_select="golomb mjpeg_decoder"
2335 jpegls_encoder_select="golomb"
2336 jv_decoder_select="blockdsp"
2337 lagarith_decoder_select="huffyuvdsp"
2338 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2339 loco_decoder_select="golomb"
2340 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2341 metasound_decoder_select="lsp mdct sinewin"
2342 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2343 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2344 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2345 mjpegb_decoder_select="mjpeg_decoder"
2346 mlp_decoder_select="mlp_parser"
2347 motionpixels_decoder_select="bswapdsp"
2348 mp1_decoder_select="mpegaudio"
2349 mp1float_decoder_select="mpegaudio"
2350 mp2_decoder_select="mpegaudio"
2351 mp2float_decoder_select="mpegaudio"
2352 mp3_decoder_select="mpegaudio"
2353 mp3adu_decoder_select="mpegaudio"
2354 mp3adufloat_decoder_select="mpegaudio"
2355 mp3float_decoder_select="mpegaudio"
2356 mp3on4_decoder_select="mpegaudio"
2357 mp3on4float_decoder_select="mpegaudio"
2358 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2359 mpc8_decoder_select="mpegaudiodsp"
2360 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2361 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2362 mpegvideo_decoder_select="mpegvideo"
2363 mpeg1video_decoder_select="mpegvideo"
2364 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2365 mpeg2video_decoder_select="mpegvideo"
2366 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2367 mpeg2_qsv_decoder_deps="libmfx"
2368 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2369 mpeg2_qsv_encoder_deps="libmfx"
2370 mpeg2_qsv_encoder_select="qsvenc"
2371 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2372 mpeg4_encoder_select="h263_encoder"
2373 msa1_decoder_select="mss34dsp"
2374 msmpeg4v1_decoder_select="h263_decoder"
2375 msmpeg4v2_decoder_select="h263_decoder"
2376 msmpeg4v2_encoder_select="h263_encoder"
2377 msmpeg4v3_decoder_select="h263_decoder"
2378 msmpeg4v3_encoder_select="h263_encoder"
2379 mss2_decoder_select="vc1_decoder"
2380 mts2_decoder_select="mss34dsp"
2381 mxpeg_decoder_select="mjpeg_decoder"
2382 nellymoser_decoder_select="mdct sinewin"
2383 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2384 nuv_decoder_select="idctdsp lzo"
2385 on2avc_decoder_select="mdct"
2386 opus_decoder_deps="swresample"
2387 opus_decoder_select="imdct15"
2388 png_decoder_select="zlib"
2389 png_encoder_select="huffyuvencdsp zlib"
2390 prores_decoder_select="blockdsp idctdsp"
2391 prores_encoder_select="fdctdsp"
2392 qcelp_decoder_select="lsp"
2393 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2394 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2395 ra_144_decoder_select="audiodsp"
2396 ralf_decoder_select="golomb"
2397 rawvideo_decoder_select="bswapdsp"
2398 rscc_decoder_select="zlib"
2399 rtjpeg_decoder_select="me_cmp"
2400 rv10_decoder_select="h263_decoder"
2401 rv10_encoder_select="h263_encoder"
2402 rv20_decoder_select="h263_decoder"
2403 rv20_encoder_select="h263_encoder"
2404 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2405 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2406 screenpresso_decoder_select="zlib"
2407 shorten_decoder_select="golomb"
2408 sipr_decoder_select="lsp"
2409 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2410 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2411 sonic_decoder_select="golomb rangecoder"
2412 sonic_encoder_select="golomb rangecoder"
2413 sonic_ls_encoder_select="golomb rangecoder"
2414 sp5x_decoder_select="mjpeg_decoder"
2415 svq1_decoder_select="hpeldsp"
2416 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2417 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2418 svq3_decoder_suggest="zlib"
2419 tak_decoder_select="audiodsp"
2420 tdsc_decoder_select="zlib mjpeg_decoder"
2421 theora_decoder_select="vp3_decoder"
2422 thp_decoder_select="mjpeg_decoder"
2423 tiff_decoder_suggest="zlib lzma"
2424 tiff_encoder_suggest="zlib"
2425 truehd_decoder_select="mlp_parser"
2426 truemotion2_decoder_select="bswapdsp"
2427 truespeech_decoder_select="bswapdsp"
2428 tscc_decoder_select="zlib"
2429 twinvq_decoder_select="mdct lsp sinewin"
2430 txd_decoder_select="texturedsp"
2431 utvideo_decoder_select="bswapdsp"
2432 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2433 vble_decoder_select="huffyuvdsp"
2434 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2435 vc1image_decoder_select="vc1_decoder"
2436 vc1_qsv_decoder_deps="libmfx"
2437 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2438 vorbis_decoder_select="mdct"
2439 vorbis_encoder_select="mdct"
2440 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2441 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2442 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2443 vp6a_decoder_select="vp6_decoder"
2444 vp6f_decoder_select="vp6_decoder"
2445 vp7_decoder_select="h264pred videodsp vp8dsp"
2446 vp8_decoder_select="h264pred videodsp vp8dsp"
2447 vp9_decoder_select="videodsp vp9_parser"
2448 webp_decoder_select="vp8_decoder"
2449 wmalossless_decoder_select="llauddsp"
2450 wmapro_decoder_select="mdct sinewin wma_freqs"
2451 wmav1_decoder_select="mdct sinewin wma_freqs"
2452 wmav1_encoder_select="mdct sinewin wma_freqs"
2453 wmav2_decoder_select="mdct sinewin wma_freqs"
2454 wmav2_encoder_select="mdct sinewin wma_freqs"
2455 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2456 wmv1_decoder_select="h263_decoder"
2457 wmv1_encoder_select="h263_encoder"
2458 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2459 wmv2_encoder_select="h263_encoder wmv2dsp"
2460 wmv3_decoder_select="vc1_decoder"
2461 wmv3image_decoder_select="wmv3_decoder"
2462 zerocodec_decoder_select="zlib"
2463 zlib_decoder_select="zlib"
2464 zlib_encoder_select="zlib"
2465 zmbv_decoder_select="zlib"
2466 zmbv_encoder_select="zlib"
2467
2468 # hardware accelerators
2469 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2470 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2471 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2472 vaapi_deps="va_va_h"
2473 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2474 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2475 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2476 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2477 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2478 xvmc_deps="X11_extensions_XvMClib_h"
2479
2480 h263_vaapi_hwaccel_deps="vaapi"
2481 h263_vaapi_hwaccel_select="h263_decoder"
2482 h263_videotoolbox_hwaccel_deps="videotoolbox"
2483 h263_videotoolbox_hwaccel_select="h263_decoder"
2484 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2485 h264_d3d11va_hwaccel_deps="d3d11va"
2486 h264_d3d11va_hwaccel_select="h264_decoder"
2487 h264_dxva2_hwaccel_deps="dxva2"
2488 h264_dxva2_hwaccel_select="h264_decoder"
2489 h264_mmal_decoder_deps="mmal"
2490 h264_mmal_hwaccel_deps="mmal"
2491 h264_mmal_decoder_select="h264_decoder"
2492 h264_mmal_encoder_deps="mmal"
2493 h264_qsv_hwaccel_deps="libmfx"
2494 h264_vaapi_hwaccel_deps="vaapi"
2495 h264_vaapi_hwaccel_select="h264_decoder"
2496 h264_vda_decoder_deps="vda"
2497 h264_vda_decoder_select="h264_decoder"
2498 h264_vda_hwaccel_deps="vda"
2499 h264_vda_hwaccel_select="h264_decoder"
2500 h264_vda_old_hwaccel_deps="vda"
2501 h264_vda_old_hwaccel_select="h264_decoder"
2502 h264_vdpau_decoder_deps="vdpau"
2503 h264_vdpau_decoder_select="h264_decoder"
2504 h264_vdpau_hwaccel_deps="vdpau"
2505 h264_vdpau_hwaccel_select="h264_decoder"
2506 h264_videotoolbox_hwaccel_deps="videotoolbox"
2507 h264_videotoolbox_hwaccel_select="h264_decoder"
2508 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2509 hevc_d3d11va_hwaccel_select="hevc_decoder"
2510 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2511 hevc_dxva2_hwaccel_select="hevc_decoder"
2512 hevc_qsv_hwaccel_deps="libmfx"
2513 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2514 hevc_vaapi_hwaccel_select="hevc_decoder"
2515 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2516 hevc_vdpau_hwaccel_select="hevc_decoder"
2517 mpeg_vdpau_decoder_deps="vdpau"
2518 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2519 mpeg_xvmc_hwaccel_deps="xvmc"
2520 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2521 mpeg1_vdpau_decoder_deps="vdpau"
2522 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2523 mpeg1_vdpau_hwaccel_deps="vdpau"
2524 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2525 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2526 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2527 mpeg1_xvmc_hwaccel_deps="xvmc"
2528 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2529 mpeg2_crystalhd_decoder_select="crystalhd"
2530 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2531 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2532 mpeg2_dxva2_hwaccel_deps="dxva2"
2533 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2534 mpeg2_mmal_decoder_deps="mmal"
2535 mpeg2_mmal_hwaccel_deps="mmal"
2536 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2537 mpeg2_qsv_hwaccel_deps="libmfx"
2538 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2539 mpeg2_vaapi_hwaccel_deps="vaapi"
2540 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2541 mpeg2_vdpau_hwaccel_deps="vdpau"
2542 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2543 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2544 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_xvmc_hwaccel_deps="xvmc"
2546 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2547 mpeg4_crystalhd_decoder_select="crystalhd"
2548 mpeg4_vaapi_hwaccel_deps="vaapi"
2549 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2550 mpeg4_vdpau_decoder_deps="vdpau"
2551 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2552 mpeg4_vdpau_hwaccel_deps="vdpau"
2553 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2554 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2555 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2556 msmpeg4_crystalhd_decoder_select="crystalhd"
2557 vc1_crystalhd_decoder_select="crystalhd"
2558 vc1_d3d11va_hwaccel_deps="d3d11va"
2559 vc1_d3d11va_hwaccel_select="vc1_decoder"
2560 vc1_dxva2_hwaccel_deps="dxva2"
2561 vc1_dxva2_hwaccel_select="vc1_decoder"
2562 vc1_vaapi_hwaccel_deps="vaapi"
2563 vc1_vaapi_hwaccel_select="vc1_decoder"
2564 vc1_vdpau_decoder_deps="vdpau"
2565 vc1_vdpau_decoder_select="vc1_decoder"
2566 vc1_vdpau_hwaccel_deps="vdpau"
2567 vc1_vdpau_hwaccel_select="vc1_decoder"
2568 vc1_mmal_decoder_deps="mmal"
2569 vc1_mmal_hwaccel_deps="mmal"
2570 vc1_mmal_decoder_select="vc1_decoder"
2571 vc1_qsv_hwaccel_deps="libmfx"
2572 vc1_qsv_hwaccel_select="qsvdec_vc1"
2573 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2574 vp9_d3d11va_hwaccel_select="vp9_decoder"
2575 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2576 vp9_dxva2_hwaccel_select="vp9_decoder"
2577 wmv3_crystalhd_decoder_select="crystalhd"
2578 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2579 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2580 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2581 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2582 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2583
2584 # parsers
2585 h264_parser_select="h264_decoder"
2586 hevc_parser_select="golomb"
2587 mpegvideo_parser_select="mpegvideo"
2588 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2589 vc1_parser_select="mpegvideo startcode vc1_decoder"
2590
2591 # bitstream_filters
2592 mjpeg2jpeg_bsf_select="jpegtables"
2593
2594 # external libraries
2595 chromaprint_muxer_deps="chromaprint"
2596 libaacplus_encoder_deps="libaacplus"
2597 libcelt_decoder_deps="libcelt"
2598 libdcadec_decoder_deps="libdcadec"
2599 libfaac_encoder_deps="libfaac"
2600 libfaac_encoder_select="audio_frame_queue"
2601 libfdk_aac_decoder_deps="libfdk_aac"
2602 libfdk_aac_encoder_deps="libfdk_aac"
2603 libfdk_aac_encoder_select="audio_frame_queue"
2604 libgme_demuxer_deps="libgme"
2605 libgsm_decoder_deps="libgsm"
2606 libgsm_encoder_deps="libgsm"
2607 libgsm_ms_decoder_deps="libgsm"
2608 libgsm_ms_encoder_deps="libgsm"
2609 libilbc_decoder_deps="libilbc"
2610 libilbc_encoder_deps="libilbc"
2611 libkvazaar_encoder_deps="libkvazaar"
2612 libmodplug_demuxer_deps="libmodplug"
2613 libmp3lame_encoder_deps="libmp3lame"
2614 libmp3lame_encoder_select="audio_frame_queue"
2615 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2616 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2617 libopencore_amrnb_encoder_select="audio_frame_queue"
2618 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2619 libopenh264_encoder_deps="libopenh264"
2620 libopenjpeg_decoder_deps="libopenjpeg"
2621 libopenjpeg_encoder_deps="libopenjpeg"
2622 libopus_decoder_deps="libopus"
2623 libopus_encoder_deps="libopus"
2624 libopus_encoder_select="audio_frame_queue"
2625 libquvi_demuxer_deps="libquvi"
2626 libschroedinger_decoder_deps="libschroedinger"
2627 libschroedinger_encoder_deps="libschroedinger"
2628 libshine_encoder_deps="libshine"
2629 libshine_encoder_select="audio_frame_queue"
2630 libspeex_decoder_deps="libspeex"
2631 libspeex_encoder_deps="libspeex"
2632 libspeex_encoder_select="audio_frame_queue"
2633 libstagefright_h264_decoder_deps="libstagefright_h264"
2634 libtheora_encoder_deps="libtheora"
2635 libtwolame_encoder_deps="libtwolame"
2636 libvo_aacenc_encoder_deps="libvo_aacenc"
2637 libvo_aacenc_encoder_select="audio_frame_queue"
2638 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2639 libvorbis_decoder_deps="libvorbis"
2640 libvorbis_encoder_deps="libvorbis"
2641 libvorbis_encoder_select="audio_frame_queue"
2642 libvpx_vp8_decoder_deps="libvpx"
2643 libvpx_vp8_encoder_deps="libvpx"
2644 libvpx_vp9_decoder_deps="libvpx"
2645 libvpx_vp9_encoder_deps="libvpx"
2646 libwavpack_encoder_deps="libwavpack"
2647 libwebp_encoder_deps="libwebp"
2648 libwebp_anim_encoder_deps="libwebp"
2649 libx262_encoder_deps="libx262"
2650 libx264_encoder_deps="libx264"
2651 libx264rgb_encoder_deps="libx264"
2652 libx264rgb_encoder_select="libx264_encoder"
2653 libx265_encoder_deps="libx265"
2654 libxavs_encoder_deps="libxavs"
2655 libxvid_encoder_deps="libxvid"
2656 libutvideo_decoder_deps="libutvideo"
2657 libutvideo_encoder_deps="libutvideo"
2658 libzvbi_teletext_decoder_deps="libzvbi"
2659 nvenc_encoder_deps="nvenc"
2660 nvenc_h264_encoder_deps="nvenc"
2661 nvenc_hevc_encoder_deps="nvenc"
2662
2663 # demuxers / muxers
2664 ac3_demuxer_select="ac3_parser"
2665 asf_demuxer_select="riffdec"
2666 asf_o_demuxer_select="riffdec"
2667 asf_muxer_select="riffenc"
2668 asf_stream_muxer_select="asf_muxer"
2669 avi_demuxer_select="riffdec exif"
2670 avi_muxer_select="riffenc"
2671 avisynth_demuxer_deps="avisynth"
2672 avisynth_demuxer_select="riffdec"
2673 caf_demuxer_select="riffdec"
2674 dash_muxer_select="mp4_muxer"
2675 dirac_demuxer_select="dirac_parser"
2676 dts_demuxer_select="dca_parser"
2677 dtshd_demuxer_select="dca_parser"
2678 dv_demuxer_select="dvprofile"
2679 dv_muxer_select="dvprofile"
2680 dxa_demuxer_select="riffdec"
2681 eac3_demuxer_select="ac3_parser"
2682 f4v_muxer_select="mov_muxer"
2683 flac_demuxer_select="flac_parser"
2684 hds_muxer_select="flv_muxer"
2685 hls_muxer_select="mpegts_muxer"
2686 image2_alias_pix_demuxer_select="image2_demuxer"
2687 image2_brender_pix_demuxer_select="image2_demuxer"
2688 ipod_muxer_select="mov_muxer"
2689 ismv_muxer_select="mov_muxer"
2690 libnut_demuxer_deps="libnut"
2691 libnut_muxer_deps="libnut"
2692 matroska_audio_muxer_select="matroska_muxer"
2693 matroska_demuxer_select="riffdec"
2694 matroska_demuxer_suggest="bzlib lzo zlib"
2695 matroska_muxer_select="riffenc"
2696 mmf_muxer_select="riffenc"
2697 mov_demuxer_select="riffdec"
2698 mov_demuxer_suggest="zlib"
2699 mov_muxer_select="riffenc rtpenc_chain"
2700 mp3_demuxer_select="mpegaudio_parser"
2701 mp4_muxer_select="mov_muxer"
2702 mpegts_muxer_select="adts_muxer latm_muxer"
2703 mpegtsraw_demuxer_select="mpegts_demuxer"
2704 mxf_d10_muxer_select="mxf_muxer"
2705 mxf_opatom_muxer_select="mxf_muxer"
2706 nut_muxer_select="riffenc"
2707 nuv_demuxer_select="riffdec"
2708 oga_muxer_select="ogg_muxer"
2709 ogg_demuxer_select="golomb"
2710 opus_muxer_select="ogg_muxer"
2711 psp_muxer_select="mov_muxer"
2712 rtp_demuxer_select="sdp_demuxer"
2713 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2714 rtsp_demuxer_select="http_protocol rtpdec"
2715 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2716 sap_demuxer_select="sdp_demuxer"
2717 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2718 sdp_demuxer_select="rtpdec"
2719 smoothstreaming_muxer_select="ismv_muxer"
2720 spdif_muxer_select="aac_parser"
2721 spx_muxer_select="ogg_muxer"
2722 tak_demuxer_select="tak_parser"
2723 tg2_muxer_select="mov_muxer"
2724 tgp_muxer_select="mov_muxer"
2725 vobsub_demuxer_select="mpegps_demuxer"
2726 w64_demuxer_select="wav_demuxer"
2727 w64_muxer_select="wav_muxer"
2728 wav_demuxer_select="riffdec"
2729 wav_muxer_select="riffenc"
2730 webm_muxer_select="riffenc"
2731 wtv_demuxer_select="riffdec"
2732 wtv_muxer_select="riffenc"
2733 xmv_demuxer_select="riffdec"
2734 xwma_demuxer_select="riffdec"
2735
2736 # indevs / outdevs
2737 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2738 alsa_outdev_deps="alsa_asoundlib_h"
2739 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2740 avfoundation_indev_select="avfoundation"
2741 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2742 caca_outdev_deps="libcaca"
2743 decklink_outdev_deps="decklink pthreads"
2744 decklink_outdev_extralibs="-lstdc++"
2745 decklink_indev_deps="decklink pthreads"
2746 decklink_indev_extralibs="-lstdc++"
2747 dshow_indev_deps="IBaseFilter"
2748 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2749 dv1394_indev_deps="dv1394"
2750 dv1394_indev_select="dv_demuxer"
2751 fbdev_indev_deps="linux_fb_h"
2752 fbdev_outdev_deps="linux_fb_h"
2753 gdigrab_indev_deps="CreateDIBSection"
2754 gdigrab_indev_extralibs="-lgdi32"
2755 gdigrab_indev_select="bmp_decoder"
2756 iec61883_indev_deps="libiec61883"
2757 jack_indev_deps="jack_jack_h sem_timedwait"
2758 lavfi_indev_deps="avfilter"
2759 libcdio_indev_deps="libcdio"
2760 libdc1394_indev_deps="libdc1394"
2761 libv4l2_indev_deps="libv4l2"
2762 openal_indev_deps="openal"
2763 opengl_outdev_deps="opengl"
2764 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2765 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2766 pulse_indev_deps="libpulse"
2767 pulse_outdev_deps="libpulse"
2768 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2769 qtkit_indev_select="qtkit"
2770 sdl_outdev_deps="sdl"
2771 sndio_indev_deps="sndio_h"
2772 sndio_outdev_deps="sndio_h"
2773 v4l_indev_deps="linux_videodev_h"
2774 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2775 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2776 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2777 vfwcap_indev_extralibs="-lavicap32"
2778 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2779 xv_outdev_extralibs="-lXv -lX11 -lXext"
2780 x11grab_indev_deps="x11grab"
2781 x11grab_xcb_indev_deps="libxcb"
2782
2783 # protocols
2784 async_protocol_deps="threads"
2785 bluray_protocol_deps="libbluray"
2786 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2787 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2788 ffrtmpcrypt_protocol_select="tcp_protocol"
2789 ffrtmphttp_protocol_deps="!librtmp_protocol"
2790 ffrtmphttp_protocol_select="http_protocol"
2791 ftp_protocol_select="tcp_protocol"
2792 gopher_protocol_select="network"
2793 http_protocol_select="tcp_protocol"
2794 httpproxy_protocol_select="tcp_protocol"
2795 https_protocol_select="tls_protocol"
2796 icecast_protocol_select="http_protocol"
2797 librtmp_protocol_deps="librtmp"
2798 librtmpe_protocol_deps="librtmp"
2799 librtmps_protocol_deps="librtmp"
2800 librtmpt_protocol_deps="librtmp"
2801 librtmpte_protocol_deps="librtmp"
2802 libsmbclient_protocol_deps="libsmbclient gplv3"
2803 libssh_protocol_deps="libssh"
2804 mmsh_protocol_select="http_protocol"
2805 mmst_protocol_select="network"
2806 rtmp_protocol_deps="!librtmp_protocol"
2807 rtmp_protocol_select="tcp_protocol"
2808 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2809 rtmps_protocol_deps="!librtmp_protocol"
2810 rtmps_protocol_select="tls_protocol"
2811 rtmpt_protocol_select="ffrtmphttp_protocol"
2812 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2813 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2814 rtp_protocol_select="udp_protocol"
2815 sctp_protocol_deps="struct_sctp_event_subscribe"
2816 sctp_protocol_select="network"
2817 srtp_protocol_select="rtp_protocol"
2818 tcp_protocol_select="network"
2819 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2820 tls_gnutls_protocol_select="tcp_protocol"
2821 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2822 tls_openssl_protocol_select="tcp_protocol"
2823 tls_schannel_protocol_deps="schannel"
2824 tls_schannel_protocol_select="tcp_protocol"
2825 tls_securetransport_protocol_deps="securetransport"
2826 tls_securetransport_protocol_select="tcp_protocol"
2827 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2828 udp_protocol_select="network"
2829 udplite_protocol_select="network"
2830 unix_protocol_deps="sys_un_h"
2831 unix_protocol_select="network"
2832
2833 # filters
2834 aemphasis_filter_deps="cabs cexp"
2835 amovie_filter_deps="avcodec avformat"
2836 aresample_filter_deps="swresample"
2837 ass_filter_deps="libass"
2838 asyncts_filter_deps="avresample"
2839 atempo_filter_deps="avcodec"
2840 atempo_filter_select="rdft"
2841 azmq_filter_deps="libzmq"
2842 blackframe_filter_deps="gpl"
2843 boxblur_filter_deps="gpl"
2844 bs2b_filter_deps="libbs2b"
2845 colormatrix_filter_deps="gpl"
2846 cover_rect_filter_deps="avcodec avformat gpl"
2847 cropdetect_filter_deps="gpl"
2848 delogo_filter_deps="gpl"
2849 deshake_filter_select="pixelutils"
2850 drawtext_filter_deps="libfreetype"
2851 dynaudnorm_filter_deps="copysign erf"
2852 ebur128_filter_deps="gpl"
2853 eq_filter_deps="gpl"
2854 fftfilt_filter_deps="avcodec"
2855 fftfilt_filter_select="rdft"
2856 flite_filter_deps="libflite"
2857 find_rect_filter_deps="avcodec avformat gpl"
2858 frei0r_filter_deps="frei0r dlopen"
2859 frei0r_src_filter_deps="frei0r dlopen"
2860 fspp_filter_deps="gpl"
2861 geq_filter_deps="gpl"
2862 histeq_filter_deps="gpl"
2863 hqdn3d_filter_deps="gpl"
2864 interlace_filter_deps="gpl"
2865 kerndeint_filter_deps="gpl"
2866 ladspa_filter_deps="ladspa dlopen"
2867 mcdeint_filter_deps="avcodec gpl"
2868 movie_filter_deps="avcodec avformat"
2869 mpdecimate_filter_deps="gpl"
2870 mpdecimate_filter_select="pixelutils"
2871 mptestsrc_filter_deps="gpl"
2872 negate_filter_deps="lut_filter"
2873 perspective_filter_deps="gpl"
2874 pp7_filter_deps="gpl"
2875 ocr_filter_deps="libtesseract"
2876 ocv_filter_deps="libopencv"
2877 owdenoise_filter_deps="gpl"
2878 pan_filter_deps="swresample"
2879 phase_filter_deps="gpl"
2880 pp_filter_deps="gpl postproc"
2881 pullup_filter_deps="gpl"
2882 removelogo_filter_deps="avcodec avformat swscale"
2883 repeatfields_filter_deps="gpl"
2884 resample_filter_deps="avresample"
2885 rubberband_filter_deps="librubberband"
2886 sab_filter_deps="gpl swscale"
2887 scale_filter_deps="swscale"
2888 scale2ref_filter_deps="swscale"
2889 select_filter_select="pixelutils"
2890 smartblur_filter_deps="gpl swscale"
2891 showcqt_filter_deps="avcodec avformat swscale"
2892 showcqt_filter_select="fft"
2893 showfreqs_filter_deps="avcodec"
2894 showfreqs_filter_select="fft"
2895 showspectrum_filter_deps="avcodec"
2896 showspectrum_filter_select="rdft"
2897 sofalizer_filter_deps="netcdf avcodec"
2898 sofalizer_filter_select="fft"
2899 spp_filter_deps="gpl avcodec"
2900 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2901 stereo3d_filter_deps="gpl"
2902 subtitles_filter_deps="avformat avcodec libass"
2903 super2xsai_filter_deps="gpl"
2904 tinterlace_filter_deps="gpl"
2905 vidstabdetect_filter_deps="libvidstab"
2906 vidstabtransform_filter_deps="libvidstab"
2907 pixfmts_super2xsai_test_deps="super2xsai_filter"
2908 tinterlace_merge_test_deps="tinterlace_filter"
2909 tinterlace_pad_test_deps="tinterlace_filter"
2910 uspp_filter_deps="gpl avcodec"
2911 zmq_filter_deps="libzmq"
2912 zoompan_filter_deps="swscale"
2913 zscale_filter_deps="libzimg"
2914
2915 # examples
2916 avio_reading="avformat avcodec avutil"
2917 avio_dir_cmd="avformat avutil"
2918 avcodec_example_deps="avcodec avutil"
2919 decoding_encoding_example_deps="avcodec avformat avutil"
2920 demuxing_decoding_example_deps="avcodec avformat avutil"
2921 extract_mvs_example_deps="avcodec avformat avutil"
2922 filter_audio_example_deps="avfilter avutil"
2923 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2924 filtering_video_example_deps="avfilter avcodec avformat avutil"
2925 metadata_example_deps="avformat avutil"
2926 muxing_example_deps="avcodec avformat avutil swscale"
2927 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2928 remuxing_example_deps="avcodec avformat avutil"
2929 resampling_audio_example_deps="avutil swresample"
2930 scaling_video_example_deps="avutil swscale"
2931 transcode_aac_example_deps="avcodec avformat swresample"
2932 transcoding_example_deps="avfilter avcodec avformat avutil"
2933
2934 # libraries, in linking order
2935 avcodec_deps="avutil"
2936 avdevice_deps="avformat avcodec avutil"
2937 avfilter_deps="avutil"
2938 avformat_deps="avcodec avutil"
2939 avresample_deps="avutil"
2940 postproc_deps="avutil gpl"
2941 swresample_deps="avutil"
2942 swscale_deps="avutil"
2943
2944 # programs
2945 ffmpeg_deps="avcodec avfilter avformat swresample"
2946 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2947                null_filter
2948                setpts_filter trim_filter"
2949 ffplay_deps="avcodec avformat swscale swresample sdl"
2950 ffplay_libs='$sdl_libs'
2951 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2952 ffprobe_deps="avcodec avformat"
2953 ffserver_deps="avformat fork sarestart"
2954 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2955
2956 # documentation
2957 podpages_deps="perl"
2958 manpages_deps="perl pod2man"
2959 htmlpages_deps="perl"
2960 htmlpages_deps_any="makeinfo_html texi2html"
2961 txtpages_deps="perl makeinfo"
2962 doc_deps_any="manpages htmlpages podpages txtpages"
2963
2964 # default parameters
2965
2966 logfile="config.log"
2967
2968 # installation paths
2969 prefix_default="/usr/local"
2970 bindir_default='${prefix}/bin'
2971 datadir_default='${prefix}/share/ffmpeg'
2972 docdir_default='${prefix}/share/doc/ffmpeg'
2973 incdir_default='${prefix}/include'
2974 libdir_default='${prefix}/lib'
2975 mandir_default='${prefix}/share/man'
2976
2977 # toolchain
2978 ar_default="ar"
2979 cc_default="gcc"
2980 cxx_default="g++"
2981 host_cc_default="gcc"
2982 cp_f="cp -f"
2983 doxygen_default="doxygen"
2984 install="install"
2985 ln_s="ln -s -f"
2986 nm_default="nm -g"
2987 objformat="elf"
2988 pkg_config_default=pkg-config
2989 ranlib_default="ranlib"
2990 strip_default="strip"
2991 yasmexe_default="yasm"
2992 windres_default="windres"
2993
2994 # OS
2995 target_os_default=$(tolower $(uname -s))
2996 host_os=$target_os_default
2997
2998 # machine
2999 if test "$target_os_default" = aix; then
3000     arch_default=$(uname -p)
3001     strip_default="strip -X32_64"
3002 else
3003     arch_default=$(uname -m)
3004 fi
3005 cpu="generic"
3006 intrinsics="none"
3007
3008 # configurable options
3009 enable $PROGRAM_LIST
3010 enable $DOCUMENT_LIST
3011 enable $EXAMPLE_LIST
3012 enable $(filter_out avresample $LIBRARY_LIST)
3013 enable stripping
3014
3015 enable asm
3016 enable debug
3017 enable doc
3018 enable faan faandct faanidct
3019 enable optimizations
3020 enable runtime_cpudetect
3021 enable safe_bitstream_reader
3022 enable static
3023 enable swscale_alpha
3024 enable valgrind_backtrace
3025
3026 sws_max_filter_size_default=256
3027 set_default sws_max_filter_size
3028
3029 # Enable hwaccels by default.
3030 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3031 enable xlib
3032
3033 # build settings
3034 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3035 LIBPREF="lib"
3036 LIBSUF=".a"
3037 FULLNAME='$(NAME)$(BUILDSUF)'
3038 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3039 SLIBPREF="lib"
3040 SLIBSUF=".so"
3041 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3042 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3043 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3044 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3045 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3046 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3047
3048 asflags_filter=echo
3049 cflags_filter=echo
3050 ldflags_filter=echo
3051
3052 AS_C='-c'
3053 AS_O='-o $@'
3054 CC_C='-c'
3055 CC_E='-E -o $@'
3056 CC_O='-o $@'
3057 CXX_C='-c'
3058 CXX_O='-o $@'
3059 OBJCC_C='-c'
3060 OBJCC_E='-E -o $@'
3061 OBJCC_O='-o $@'
3062 LD_O='-o $@'
3063 LD_LIB='-l%'
3064 LD_PATH='-L'
3065 HOSTCC_C='-c'
3066 HOSTCC_E='-E -o $@'
3067 HOSTCC_O='-o $@'
3068 HOSTLD_O='-o $@'
3069
3070 host_libs='-lm'
3071 host_cflags_filter=echo
3072 host_ldflags_filter=echo
3073
3074 target_path='$(CURDIR)'
3075
3076 # since the object filename is not given with the -MM flag, the compiler
3077 # is only able to print the basename, and we must add the path ourselves
3078 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3079 DEPFLAGS='-MM'
3080
3081 # find source path
3082 if test -f configure; then
3083     source_path=.
3084 else
3085     source_path=$(cd $(dirname "$0"); pwd)
3086     case "$source_path" in
3087         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3088     esac
3089     test -e "$source_path/config.h" &&
3090         die "Out of tree builds are impossible with config.h in source dir."
3091 fi
3092
3093 for v in "$@"; do
3094     r=${v#*=}
3095     l=${v%"$r"}
3096     r=$(sh_quote "$r")
3097     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3098 done
3099
3100 find_things(){
3101     thing=$1
3102     pattern=$2
3103     file=$source_path/$3
3104     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3105 }
3106
3107 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3108 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3109 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3110 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3111 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3112 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3113 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3114 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3115 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3116 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3117 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3118
3119 ALL_COMPONENTS="
3120     $BSF_LIST
3121     $DECODER_LIST
3122     $DEMUXER_LIST
3123     $ENCODER_LIST
3124     $FILTER_LIST
3125     $HWACCEL_LIST
3126     $INDEV_LIST
3127     $MUXER_LIST
3128     $OUTDEV_LIST
3129     $PARSER_LIST
3130     $PROTOCOL_LIST
3131 "
3132
3133 for n in $COMPONENT_LIST; do
3134     v=$(toupper ${n%s})_LIST
3135     eval enable \$$v
3136     eval ${n}_if_any="\$$v"
3137 done
3138
3139 enable $ARCH_EXT_LIST
3140
3141 die_unknown(){
3142     echo "Unknown option \"$1\"."
3143     echo "See $0 --help for available options."
3144     exit 1
3145 }
3146
3147 print_in_columns() {
3148     cols=$(expr $ncols / 24)
3149     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3150 }
3151
3152 show_list() {
3153     suffix=_$1
3154     shift
3155     echo $* | sed s/$suffix//g | print_in_columns
3156     exit 0
3157 }
3158
3159 rand_list(){
3160     IFS=', '
3161     set -- $*
3162     unset IFS
3163     for thing; do
3164         comp=${thing%:*}
3165         prob=${thing#$comp}
3166         prob=${prob#:}
3167         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3168         echo "prob ${prob:-0.5}"
3169         printf '%s\n' $comp
3170     done
3171 }
3172
3173 do_random(){
3174     action=$1
3175     shift
3176     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3177     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3178 }
3179
3180 for opt do
3181     optval="${opt#*=}"
3182     case "$opt" in
3183         --extra-ldflags=*)
3184             add_ldflags $optval
3185         ;;
3186         --extra-ldexeflags=*)
3187             add_ldexeflags $optval
3188         ;;
3189         --extra-ldlibflags=*)
3190             add_ldlibflags $optval
3191         ;;
3192         --extra-libs=*)
3193             add_extralibs $optval
3194         ;;
3195         --disable-devices)
3196             disable $INDEV_LIST $OUTDEV_LIST
3197         ;;
3198         --enable-debug=*)
3199             debuglevel="$optval"
3200         ;;
3201         --disable-programs)
3202             disable $PROGRAM_LIST
3203         ;;
3204         --disable-everything)
3205             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3206         ;;
3207         --disable-all)
3208             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3209             disable $LIBRARY_LIST $PROGRAM_LIST doc
3210             enable avutil
3211         ;;
3212         --enable-random|--disable-random)
3213             action=${opt%%-random}
3214             do_random ${action#--} $COMPONENT_LIST
3215         ;;
3216         --enable-random=*|--disable-random=*)
3217             action=${opt%%-random=*}
3218             do_random ${action#--} $optval
3219         ;;
3220         --enable-*=*|--disable-*=*)
3221             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3222             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3223             eval list=\$$(toupper $thing)_LIST
3224             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3225             list=$(filter "$name" $list)
3226             [ "$list" = "" ] && warn "Option $opt did not match anything"
3227             $action $list
3228         ;;
3229         --enable-?*|--disable-?*)
3230             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3231             if is_in $option $COMPONENT_LIST; then
3232                 test $action = disable && action=unset
3233                 eval $action \$$(toupper ${option%s})_LIST
3234             elif is_in $option $CMDLINE_SELECT; then
3235                 $action $option
3236             else
3237                 die_unknown $opt
3238             fi
3239         ;;
3240         --list-*)
3241             NAME="${opt#--list-}"
3242             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3243             NAME=${NAME%s}
3244             eval show_list $NAME \$$(toupper $NAME)_LIST
3245         ;;
3246         --help|-h) show_help
3247         ;;
3248         --fatal-warnings) enable fatal_warnings
3249         ;;
3250         *)
3251             optname="${opt%%=*}"
3252             optname="${optname#--}"
3253             optname=$(echo "$optname" | sed 's/-/_/g')
3254             if is_in $optname $CMDLINE_SET; then
3255                 eval $optname='$optval'
3256             elif is_in $optname $CMDLINE_APPEND; then
3257                 append $optname "$optval"
3258             else
3259                 die_unknown $opt
3260             fi
3261         ;;
3262     esac
3263 done
3264
3265 for e in $env; do
3266     eval "export $e"
3267 done
3268
3269 disabled logging && logfile=/dev/null
3270
3271 # Disable all the library-specific components if the library itself
3272 # is disabled, see AVCODEC_LIST and following _LIST variables.
3273
3274 disable_components(){
3275     disabled ${1} && disable $(
3276         eval components="\$$(toupper ${1})_COMPONENTS"
3277         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3278     )
3279 }
3280
3281 map 'disable_components $v' $LIBRARY_LIST
3282
3283 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3284 set >> $logfile
3285
3286 test -n "$valgrind" && toolchain="valgrind-memcheck"
3287
3288 case "$toolchain" in
3289     clang-asan)
3290         cc_default="clang"
3291         add_cflags  -fsanitize=address
3292         add_ldflags -fsanitize=address
3293     ;;
3294     clang-tsan)
3295         cc_default="clang"
3296         add_cflags  -fsanitize=thread -pie
3297         add_ldflags -fsanitize=thread -pie
3298     ;;
3299     clang-usan)
3300         cc_default="clang"
3301         add_cflags  -fsanitize=undefined
3302         add_ldflags -fsanitize=undefined
3303     ;;
3304     gcc-asan)
3305         cc_default="gcc"
3306         add_cflags  -fsanitize=address
3307         add_ldflags -fsanitize=address
3308     ;;
3309     gcc-tsan)
3310         cc_default="gcc"
3311         add_cflags  -fsanitize=thread -pie -fPIC
3312         add_ldflags -fsanitize=thread -pie -fPIC
3313     ;;
3314     gcc-usan)
3315         cc_default="gcc"
3316         add_cflags  -fsanitize=undefined
3317         add_ldflags -fsanitize=undefined
3318     ;;
3319     valgrind-massif)
3320         target_exec_default=${valgrind:-"valgrind"}
3321         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3322     ;;
3323     valgrind-memcheck)
3324         target_exec_default=${valgrind:-"valgrind"}
3325         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3326     ;;
3327     msvc)
3328         # Check whether the current MSVC version needs the C99 converter.
3329         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3330         # support enough of C99 to build ffmpeg. Default to the new
3331         # behaviour if the regexp was unable to match anything, since this
3332         # successfully parses the version number of existing supported
3333         # versions that require the converter (MSVC 2010 and 2012).
3334         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3335         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3336             cc_default="cl"
3337         else
3338             cc_default="c99wrap cl"
3339         fi
3340         ld_default="$source_path/compat/windows/mslink"
3341         nm_default="dumpbin -symbols"
3342         ar_default="lib"
3343         case "$arch" in
3344         arm*)
3345             as_default="armasm"
3346             ;;
3347         esac
3348         target_os_default="win32"
3349         # Use a relative path for TMPDIR. This makes sure all the
3350         # ffconf temp files are written with a relative path, avoiding
3351         # issues with msys/win32 path conversion for MSVC parameters
3352         # such as -Fo<file> or -out:<file>.
3353         TMPDIR=.
3354     ;;
3355     icl)
3356         cc_default="icl"
3357         ld_default="xilink"
3358         nm_default="dumpbin -symbols"
3359         ar_default="xilib"
3360         target_os_default="win32"
3361         TMPDIR=.
3362     ;;
3363     gcov)
3364         add_cflags  -fprofile-arcs -ftest-coverage
3365         add_ldflags -fprofile-arcs -ftest-coverage
3366     ;;
3367     hardened)
3368         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3369         add_cflags   -fno-strict-overflow -fstack-protector-all
3370         add_ldflags  -Wl,-z,relro -Wl,-z,now
3371     ;;
3372     ?*)
3373         die "Unknown toolchain $toolchain"
3374     ;;
3375 esac
3376
3377 test -n "$cross_prefix" && enable cross_compile
3378
3379 if enabled cross_compile; then
3380     test -n "$arch" && test -n "$target_os" ||
3381         die "Must specify target arch and OS when cross-compiling"
3382 fi
3383
3384 ar_default="${cross_prefix}${ar_default}"
3385 cc_default="${cross_prefix}${cc_default}"
3386 cxx_default="${cross_prefix}${cxx_default}"
3387 nm_default="${cross_prefix}${nm_default}"
3388 pkg_config_default="${cross_prefix}${pkg_config_default}"
3389 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3390     ranlib_default="${cross_prefix}${ranlib_default} -D"
3391 else
3392     ranlib_default="${cross_prefix}${ranlib_default}"
3393 fi
3394 strip_default="${cross_prefix}${strip_default}"
3395 windres_default="${cross_prefix}${windres_default}"
3396
3397 sysinclude_default="${sysroot}/usr/include"
3398
3399 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3400     target_exec target_os yasmexe
3401 enabled cross_compile || host_cc_default=$cc
3402 set_default host_cc
3403
3404 pkg_config_fail_message=""
3405 if ! $pkg_config --version >/dev/null 2>&1; then
3406     warn "$pkg_config not found, library detection may fail."
3407     pkg_config=false
3408 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3409     pkg_config_fail_message="
3410 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3411 fi
3412
3413 if test $doxygen != $doxygen_default && \
3414   ! $doxygen --version >/dev/null 2>&1; then
3415     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3416 fi
3417
3418 exesuf() {
3419     case $1 in
3420         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3421     esac
3422 }
3423
3424 EXESUF=$(exesuf $target_os)
3425 HOSTEXESUF=$(exesuf $host_os)
3426
3427 # set temporary file name
3428 : ${TMPDIR:=$TEMPDIR}
3429 : ${TMPDIR:=$TMP}
3430 : ${TMPDIR:=/tmp}
3431
3432 if [ -n "$tempprefix" ] ; then
3433     mktemp(){
3434         echo $tempprefix.${HOSTNAME}.${UID}
3435     }
3436 elif ! check_cmd mktemp -u XXXXXX; then
3437     # simple replacement for missing mktemp
3438     # NOT SAFE FOR GENERAL USE
3439     mktemp(){
3440         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3441     }
3442 fi
3443
3444 tmpfile(){
3445     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3446         (set -C; exec > $tmp) 2>/dev/null ||
3447         die "Unable to create temporary file in $TMPDIR."
3448     append TMPFILES $tmp
3449     eval $1=$tmp
3450 }
3451
3452 trap 'rm -f -- $TMPFILES' EXIT
3453
3454 tmpfile TMPASM .asm
3455 tmpfile TMPC   .c
3456 tmpfile TMPCPP .cpp
3457 tmpfile TMPE   $EXESUF
3458 tmpfile TMPH   .h
3459 tmpfile TMPM   .m
3460 tmpfile TMPO   .o
3461 tmpfile TMPS   .S
3462 tmpfile TMPSH  .sh
3463 tmpfile TMPV   .ver
3464
3465 unset -f mktemp
3466
3467 chmod +x $TMPE
3468
3469 # make sure we can execute files in $TMPDIR
3470 cat > $TMPSH 2>> $logfile <<EOF
3471 #! /bin/sh
3472 EOF
3473 chmod +x $TMPSH >> $logfile 2>&1
3474 if ! $TMPSH >> $logfile 2>&1; then
3475     cat <<EOF
3476 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3477 variable to another directory and make sure that it is not mounted noexec.
3478 EOF
3479     die "Sanity test failed."
3480 fi
3481
3482 armasm_flags(){
3483     for flag; do
3484         case $flag in
3485             # Filter out MSVC cl.exe options from cflags that shouldn't
3486             # be passed to gas-preprocessor
3487             -M[TD]*)                                            ;;
3488             *)                  echo $flag                      ;;
3489         esac
3490    done
3491 }
3492
3493 ccc_flags(){
3494     for flag; do
3495         case $flag in
3496             -std=c99)           echo -c99                       ;;
3497             -mcpu=*)            echo -arch ${flag#*=}           ;;
3498             -mieee)             echo -ieee                      ;;
3499             -O*|-fast)          echo $flag                      ;;
3500             -fno-math-errno)    echo -assume nomath_errno       ;;
3501             -g)                 echo -g3                        ;;
3502             -Wall)              echo -msg_enable level2         ;;
3503             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3504             -Wl,*)              echo $flag                      ;;
3505             -f*|-W*)                                            ;;
3506             *)                  echo $flag                      ;;
3507         esac
3508    done
3509 }
3510
3511 cparser_flags(){
3512     for flag; do
3513         case $flag in
3514             -Wno-switch)             echo -Wno-switch-enum ;;
3515             -Wno-format-zero-length) ;;
3516             -Wdisabled-optimization) ;;
3517             -Wno-pointer-sign)       echo -Wno-other ;;
3518             *)                       echo $flag ;;
3519         esac
3520     done
3521 }
3522
3523 msvc_common_flags(){
3524     for flag; do
3525         case $flag in
3526             # In addition to specifying certain flags under the compiler
3527             # specific filters, they must be specified here as well or else the
3528             # generic catch all at the bottom will print the original flag.
3529             -Wall)                ;;
3530             -std=c99)             ;;
3531             # Common flags
3532             -fomit-frame-pointer) ;;
3533             -g)                   echo -Z7 ;;
3534             -fno-math-errno)      ;;
3535             -fno-common)          ;;
3536             -fno-signed-zeros)    ;;
3537             -fPIC)                ;;
3538             -mthumb)              ;;
3539             -march=*)             ;;
3540             -lz)                  echo zlib.lib ;;
3541             -lavifil32)           echo vfw32.lib ;;
3542             -lavicap32)           echo vfw32.lib user32.lib ;;
3543             -l*)                  echo ${flag#-l}.lib ;;
3544             -LARGEADDRESSAWARE)   echo $flag ;;
3545             -L*)                  echo -libpath:${flag#-L} ;;
3546             *)                    echo $flag ;;
3547         esac
3548     done
3549 }
3550
3551 msvc_flags(){
3552     msvc_common_flags "$@"
3553     for flag; do
3554         case $flag in
3555             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3556                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3557                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3558                                        -wd4307 \
3559                                        -wd4273 -wd4554 -wd4701 ;;
3560         esac
3561     done
3562 }
3563
3564 icl_flags(){
3565     msvc_common_flags "$@"
3566     for flag; do
3567         case $flag in
3568             # Despite what Intel's documentation says -Wall, which is supported
3569             # on Windows, does enable remarks so disable them here.
3570             -Wall)                echo $flag -Qdiag-disable:remark ;;
3571             -std=c99)             echo -Qstd=c99 ;;
3572             -flto)                echo -ipo ;;
3573         esac
3574     done
3575 }
3576
3577 icc_flags(){
3578     for flag; do
3579         case $flag in
3580             -flto)                echo -ipo ;;
3581             *)                    echo $flag ;;
3582         esac
3583     done
3584 }
3585
3586 pgi_flags(){
3587     for flag; do
3588         case $flag in
3589             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3590             -fomit-frame-pointer) echo -Mnoframe ;;
3591             -g)                   echo -gopt ;;
3592             *)                    echo $flag ;;
3593         esac
3594     done
3595 }
3596
3597 suncc_flags(){
3598     for flag; do
3599         case $flag in
3600             -march=*|-mcpu=*)
3601                 case "${flag#*=}" in
3602                     native)                   echo -xtarget=native       ;;
3603                     v9|niagara)               echo -xarch=sparc          ;;
3604                     ultrasparc)               echo -xarch=sparcvis       ;;
3605                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3606                     i586|pentium)             echo -xchip=pentium        ;;
3607                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3608                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3609                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3610                     pentium4*)          echo -xtarget=pentium4           ;;
3611                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3612                     *-sse3)             echo -xarch=sse3                 ;;
3613                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3614                     bonnell)                   echo -xarch=ssse3         ;;
3615                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3616                     westmere)                  echo -xtarget=westmere    ;;
3617                     silvermont)                echo -xarch=sse4_2        ;;
3618                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3619                     core-avx*|ivybridge|haswell|broadwell)
3620                                                echo -xarch=avx           ;;
3621                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3622                     btver1)                    echo -xarch=amdsse4a      ;;
3623                     btver2|bdver*)             echo -xarch=avx           ;;
3624                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3625                     k8|opteron|athlon64|athlon-fx)
3626                                                echo -xarch=sse2a         ;;
3627                     athlon*)                   echo -xarch=pentium_proa  ;;
3628                 esac
3629                 ;;
3630             -std=c99)             echo -xc99              ;;
3631             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3632             -fPIC)                echo -KPIC -xcode=pic32 ;;
3633             -W*,*)                echo $flag              ;;
3634             -f*-*|-W*|-mimpure-text)                      ;;
3635             -shared)              echo -G                 ;;
3636             *)                    echo $flag              ;;
3637         esac
3638     done
3639 }
3640
3641 tms470_flags(){
3642     for flag; do
3643         case $flag in
3644             -march=*|-mcpu=*)
3645                 case "${flag#*=}" in
3646                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3647                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3648                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3649                     armv6*|arm11*)          echo -mv=6   ;;
3650                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3651                                             echo -mv=5e  ;;
3652                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3653                 esac
3654                 ;;
3655             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3656             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3657             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3658             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3659             -msoft-float)   echo --float_support=vfplib       ;;
3660             -O[0-3]|-mf=*)  echo $flag                        ;;
3661             -g)             echo -g -mn                       ;;
3662             -pds=*)         echo $flag                        ;;
3663             -D*|-I*)        echo $flag                        ;;
3664             --gcc|--abi=*)  echo $flag                        ;;
3665             -me)            echo $flag                        ;;
3666         esac
3667     done
3668 }
3669
3670 probe_cc(){
3671     pfx=$1
3672     _cc=$2
3673     first=$3
3674
3675     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3676     unset _ld_o _ldflags _ld_lib _ld_path
3677     unset _depflags _DEPCMD _DEPFLAGS
3678     _flags_filter=echo
3679
3680     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3681         true # no-op to avoid reading stdin in following checks
3682     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3683         _type=llvm_gcc
3684         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3685         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3686         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3687         _cflags_speed='-O3'
3688         _cflags_size='-Os'
3689     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3690         _type=gcc
3691         gcc_version=$($_cc --version | head -n1)
3692         gcc_basever=$($_cc -dumpversion)
3693         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3694         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3695         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3696         case $gcc_basever in
3697             2*) ;;
3698             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3699         esac
3700         if [ "$first" = true ]; then
3701             case $gcc_basever in
3702                 4.2*)
3703                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3704             esac
3705         fi
3706         _cflags_speed='-O3'
3707         _cflags_size='-Os'
3708     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3709         _type=icc
3710         _ident=$($_cc --version | head -n1)
3711         _depflags='-MMD'
3712         _cflags_speed='-O3'
3713         _cflags_size='-Os'
3714         _cflags_noopt='-O1'
3715         _flags_filter=icc_flags
3716     elif $_cc -v 2>&1 | grep -q xlc; then
3717         _type=xlc
3718         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3719         _cflags_speed='-O5'
3720         _cflags_size='-O5 -qcompact'
3721     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3722         _type=ccc
3723         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3724         _DEPFLAGS='-M'
3725         _cflags_speed='-fast'
3726         _cflags_size='-O1'
3727         _flags_filter=ccc_flags
3728     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3729         test -d "$sysroot" || die "No valid sysroot specified."
3730         _type=armcc
3731         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3732         armcc_conf="$PWD/armcc.conf"
3733         $_cc --arm_linux_configure                 \
3734              --arm_linux_config_file="$armcc_conf" \
3735              --configure_sysroot="$sysroot"        \
3736              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3737              die "Error creating armcc configuration file."
3738         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3739         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3740         as_default="${cross_prefix}gcc"
3741         _depflags='-MMD'
3742         _cflags_speed='-O3'
3743         _cflags_size='-Os'
3744     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3745         _type=tms470
3746         _ident=$($_cc -version | head -n1 | tr -s ' ')
3747         _flags='--gcc --abi=eabi -me'
3748         _cc_e='-ppl -fe=$@'
3749         _cc_o='-fe=$@'
3750         _depflags='-ppa -ppd=$(@:.o=.d)'
3751         _cflags_speed='-O3 -mf=5'
3752         _cflags_size='-O3 -mf=2'
3753         _flags_filter=tms470_flags
3754     elif $_cc -v 2>&1 | grep -q clang; then
3755         _type=clang
3756         _ident=$($_cc --version 2>/dev/null | head -n1)
3757         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3758         _cflags_speed='-O3'
3759         _cflags_size='-Os'
3760     elif $_cc -V 2>&1 | grep -q Sun; then
3761         _type=suncc
3762         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3763         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3764         _DEPFLAGS='-xM1 -xc99'
3765         _ldflags='-std=c99'
3766         _cflags_speed='-O5'
3767         _cflags_size='-O5 -xspace'
3768         _flags_filter=suncc_flags
3769     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3770         _type=pathscale
3771         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3772         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3773         _cflags_speed='-O2'
3774         _cflags_size='-Os'
3775         _flags_filter='filter_out -Wdisabled-optimization'
3776     elif $_cc -v 2>&1 | grep -q Open64; then
3777         _type=open64
3778         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3779         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3780         _cflags_speed='-O2'
3781         _cflags_size='-Os'
3782         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3783     elif $_cc -V 2>&1 | grep -q Portland; then
3784         _type=pgi
3785         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3786         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3787         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3788         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3789         _cflags_noopt="-O"
3790         _flags_filter=pgi_flags
3791     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3792         _type=armasm
3793         _ident=$($_cc | head -n1)
3794         # 4509: "This form of conditional instruction is deprecated"
3795         _flags="-nologo -ignore 4509"
3796         _flags_filter=armasm_flags
3797     elif $_cc 2>&1 | grep -q Intel; then
3798         _type=icl
3799         _ident=$($_cc 2>&1 | head -n1)
3800         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3801         # Not only is O3 broken on 13.x+ but it is slower on all previous
3802         # versions (tested) as well.
3803         _cflags_speed="-O2"
3804         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3805         if $_cc 2>&1 | grep -q Linker; then
3806             _ld_o='-out:$@'
3807         else
3808             _ld_o='-Fe$@'
3809         fi
3810         _cc_o='-Fo$@'
3811         _cc_e='-P'
3812         _flags_filter=icl_flags
3813         _ld_lib='lib%.a'
3814         _ld_path='-libpath:'
3815         # -Qdiag-error to make icl error when seeing certain unknown arguments
3816         _flags='-nologo -Qdiag-error:4044,10157'
3817         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3818         # with MSVC which enables it by default.
3819         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3820         disable stripping
3821     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3822         _type=msvc
3823         _ident=$($_cc 2>&1 | head -n1)
3824         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3825         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3826         _cflags_speed="-O2"
3827         _cflags_size="-O1"
3828         if $_cc -nologo- 2>&1 | grep -q Linker; then
3829             _ld_o='-out:$@'
3830         else
3831             _ld_o='-Fe$@'
3832         fi
3833         _cc_o='-Fo$@'
3834         _cc_e='-P -Fi$@'
3835         _flags_filter=msvc_flags
3836         _ld_lib='lib%.a'
3837         _ld_path='-libpath:'
3838         _flags='-nologo'
3839         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3840         disable stripping
3841     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3842         _type=cparser
3843         _ident=$($_cc --version | head -n1)
3844         _depflags='-MMD'
3845         _cflags_speed='-O4'
3846         _cflags_size='-O2'
3847         _flags_filter=cparser_flags
3848     fi
3849
3850     eval ${pfx}_type=\$_type
3851     eval ${pfx}_ident=\$_ident
3852 }
3853
3854 set_ccvars(){
3855     eval ${1}_C=\${_cc_c-\${${1}_C}}
3856     eval ${1}_E=\${_cc_e-\${${1}_E}}
3857     eval ${1}_O=\${_cc_o-\${${1}_O}}
3858
3859     if [ -n "$_depflags" ]; then
3860         eval ${1}_DEPFLAGS=\$_depflags
3861     else
3862         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3863         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3864         eval DEP${1}FLAGS=\$_flags
3865     fi
3866 }
3867
3868 probe_cc cc "$cc" "true"
3869 cflags_filter=$_flags_filter
3870 cflags_speed=$_cflags_speed
3871 cflags_size=$_cflags_size
3872 cflags_noopt=$_cflags_noopt
3873 add_cflags $_flags $_cflags
3874 cc_ldflags=$_ldflags
3875 set_ccvars CC
3876
3877 probe_cc hostcc "$host_cc"
3878 host_cflags_filter=$_flags_filter
3879 add_host_cflags  $_flags $_cflags
3880 set_ccvars HOSTCC
3881
3882 test -n "$cc_type" && enable $cc_type ||
3883     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3884
3885 : ${as_default:=$cc}
3886 : ${objcc_default:=$cc}
3887 : ${dep_cc_default:=$cc}
3888 : ${ld_default:=$cc}
3889 : ${host_ld_default:=$host_cc}
3890 set_default ar as objcc dep_cc ld host_ld windres
3891
3892 probe_cc as "$as"
3893 asflags_filter=$_flags_filter
3894 add_asflags $_flags $_cflags
3895 set_ccvars AS
3896
3897 probe_cc objcc "$objcc"
3898 objcflags_filter=$_flags_filter
3899 add_objcflags $_flags $_cflags
3900 set_ccvars OBJC
3901
3902 probe_cc ld "$ld"
3903 ldflags_filter=$_flags_filter
3904 add_ldflags $_flags $_ldflags
3905 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3906 LD_O=${_ld_o-$LD_O}
3907 LD_LIB=${_ld_lib-$LD_LIB}
3908 LD_PATH=${_ld_path-$LD_PATH}
3909
3910 probe_cc hostld "$host_ld"
3911 host_ldflags_filter=$_flags_filter
3912 add_host_ldflags $_flags $_ldflags
3913 HOSTLD_O=${_ld_o-$HOSTLD_O}
3914
3915 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3916     probe_cc depcc "$dep_cc"
3917     CCDEP=${_DEPCMD:-$DEPCMD}
3918     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3919     DEPCCFLAGS=$_flags
3920 fi
3921
3922 if $ar 2>&1 | grep -q Microsoft; then
3923     arflags="-nologo"
3924     ar_o='-out:$@'
3925 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3926     arflags="rq"
3927     ar_o='$@'
3928 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3929     arflags='-Xany -r -c'
3930     ar_o='$@'
3931 elif $ar 2>&1 | grep -q "\[D\] "; then
3932     arflags="rcD"
3933     ar_o='$@'
3934 else
3935     arflags="rc"
3936     ar_o='$@'
3937 fi
3938
3939 add_cflags $extra_cflags
3940 add_cxxflags $extra_cxxflags
3941 add_objcflags $extra_objcflags
3942 add_asflags $extra_cflags
3943
3944 if test -n "$sysroot"; then
3945     case "$cc_type" in
3946         gcc|llvm_gcc|clang)
3947             add_cppflags --sysroot="$sysroot"
3948             add_ldflags --sysroot="$sysroot"
3949 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3950             add_cppflags -isysroot "$sysroot"
3951             add_ldflags -isysroot "$sysroot"
3952         ;;
3953         tms470)
3954             add_cppflags -I"$sysinclude"
3955             add_ldflags  --sysroot="$sysroot"
3956         ;;
3957     esac
3958 fi
3959
3960 if test "$cpu" = host; then
3961     enabled cross_compile &&
3962         die "--cpu=host makes no sense when cross-compiling."
3963
3964     case "$cc_type" in
3965         gcc|llvm_gcc)
3966             check_native(){
3967                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3968                 sed -n "/cc1.*$1=/{
3969                             s/.*$1=\\([^ ]*\\).*/\\1/
3970                             p
3971                             q
3972                         }" $TMPE
3973             }
3974             cpu=$(check_native -march || check_native -mcpu)
3975         ;;
3976     esac
3977
3978     test "${cpu:-host}" = host &&
3979         die "--cpu=host not supported with compiler $cc"
3980 fi
3981
3982 # Deal with common $arch aliases
3983 case "$arch" in
3984     aarch64|arm64)
3985         arch="aarch64"
3986     ;;
3987     arm*|iPad*|iPhone*)
3988         arch="arm"
3989     ;;
3990     mips*|IP*)
3991         arch="mips"
3992     ;;
3993     parisc*|hppa*)
3994         arch="parisc"
3995     ;;
3996     "Power Macintosh"|ppc*|powerpc*)
3997         arch="ppc"
3998     ;;
3999     s390|s390x)
4000         arch="s390"
4001     ;;
4002     sh4|sh)
4003         arch="sh4"
4004     ;;
4005     sun4u|sparc*)
4006         arch="sparc"
4007     ;;
4008     tilegx|tile-gx)
4009         arch="tilegx"
4010     ;;
4011     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4012         arch="x86"
4013     ;;
4014 esac
4015
4016 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4017 enable $arch
4018
4019 # Add processor-specific flags
4020 if enabled aarch64; then
4021
4022     case $cpu in
4023         armv*)
4024             cpuflags="-march=$cpu"
4025         ;;
4026         *)
4027             cpuflags="-mcpu=$cpu"
4028         ;;
4029     esac
4030
4031 elif enabled alpha; then
4032
4033     cpuflags="-mcpu=$cpu"
4034
4035 elif enabled arm; then
4036
4037     check_arm_arch() {
4038         check_cpp_condition stddef.h \
4039             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4040             $cpuflags
4041     }
4042
4043     probe_arm_arch() {
4044         if   check_arm_arch 4;        then echo armv4;
4045         elif check_arm_arch 4T;       then echo armv4t;
4046         elif check_arm_arch 5;        then echo armv5;
4047         elif check_arm_arch 5E;       then echo armv5e;
4048         elif check_arm_arch 5T;       then echo armv5t;
4049         elif check_arm_arch 5TE;      then echo armv5te;
4050         elif check_arm_arch 5TEJ;     then echo armv5te;
4051         elif check_arm_arch 6;        then echo armv6;
4052         elif check_arm_arch 6J;       then echo armv6j;
4053         elif check_arm_arch 6K;       then echo armv6k;
4054         elif check_arm_arch 6Z;       then echo armv6z;
4055         elif check_arm_arch 6ZK;      then echo armv6zk;
4056         elif check_arm_arch 6T2;      then echo armv6t2;
4057         elif check_arm_arch 7;        then echo armv7;
4058         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4059         elif check_arm_arch 7S;       then echo armv7-a;
4060         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4061         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4062         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4063         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4064         fi
4065     }
4066
4067     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4068
4069     case $cpu in
4070         armv*)
4071             cpuflags="-march=$cpu"
4072             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4073         ;;
4074         *)
4075             cpuflags="-mcpu=$cpu"
4076             case $cpu in
4077                 cortex-a*)                               subarch=armv7a  ;;
4078                 cortex-r*)                               subarch=armv7r  ;;
4079                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4080                 arm11*)                                  subarch=armv6   ;;
4081                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4082                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4083                 *)                             subarch=$(probe_arm_arch) ;;
4084             esac
4085         ;;
4086     esac
4087
4088     case "$subarch" in
4089         armv5t*)    enable fast_clz                ;;
4090         armv[6-8]*)
4091             enable fast_clz
4092             disabled fast_unaligned || enable fast_unaligned
4093             ;;
4094     esac
4095
4096 elif enabled avr32; then
4097
4098     case $cpu in
4099         ap7[02]0[0-2])
4100             subarch="avr32_ap"
4101             cpuflags="-mpart=$cpu"
4102         ;;
4103         ap)
4104             subarch="avr32_ap"
4105             cpuflags="-march=$cpu"
4106         ;;
4107         uc3[ab]*)
4108             subarch="avr32_uc"
4109             cpuflags="-mcpu=$cpu"
4110         ;;
4111         uc)
4112             subarch="avr32_uc"
4113             cpuflags="-march=$cpu"
4114         ;;
4115     esac
4116
4117 elif enabled bfin; then
4118
4119     cpuflags="-mcpu=$cpu"
4120
4121 elif enabled mips; then
4122
4123     cpuflags="-march=$cpu"
4124
4125     case $cpu in
4126         24kc)
4127             disable mips64r2
4128             disable mips64r6
4129             disable mipsfpu
4130             disable mipsdsp
4131             disable mipsdspr2
4132             disable msa
4133         ;;
4134         24kf*)
4135             disable mips64r2
4136             disable mips64r6
4137             disable mipsdsp
4138             disable mipsdspr2
4139             disable msa
4140         ;;
4141         24kec|34kc|1004kc)
4142             disable mips64r2
4143             disable mips64r6
4144             disable mipsfpu
4145             disable mipsdspr2
4146             disable msa
4147         ;;
4148         24kef*|34kf*|1004kf*)
4149             disable mips64r2
4150             disable mips64r6
4151             disable mipsdspr2
4152             disable msa
4153         ;;
4154         74kc)
4155             disable mips64r2
4156             disable mips64r6
4157             disable mipsfpu
4158             disable msa
4159         ;;
4160         74kf)
4161             disable mips64r2
4162             disable mips64r6
4163             disable msa
4164         ;;
4165         p5600)
4166             disable mips64r2
4167             disable mips64r6
4168             disable mipsdsp
4169             disable mipsdspr2
4170             check_cflags "-mtune=p5600" &&
4171             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4172             add_asflags "-mfp64"
4173         ;;
4174         i6400)
4175             disable mips32r2
4176             disable mips64r2
4177             disable mipsdsp
4178             disable mipsdspr2
4179             check_cflags "-mtune=i6400 -mabi=64" &&
4180             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4181             check_ldflags "-mabi=64" &&
4182             add_asflags "-mfp64"
4183         ;;
4184         loongson*)
4185             disable mipsfpu
4186             disable mips32r2
4187             disable mips64r2
4188             disable mips64r6
4189             disable mipsdsp
4190             disable mipsdspr2
4191             disable msa
4192             enable local_aligned_8 local_aligned_16 local_aligned_32
4193             enable simd_align_16
4194             enable fast_64bit
4195             enable fast_clz
4196             enable fast_cmov
4197             enable fast_unaligned
4198             disable aligned_stack
4199             case $cpu in
4200                 loongson3*)
4201                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4202                 ;;
4203                 loongson2e)
4204                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4205                 ;;
4206                 loongson2f)
4207                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4208                 ;;
4209             esac
4210         ;;
4211         generic)
4212             disable mips64r6
4213             disable msa
4214         ;;
4215         *)
4216             disable mipsfpu
4217             disable mips32r2
4218             disable mips64r2
4219             disable mips64r6
4220             disable mipsdsp
4221             disable mipsdspr2
4222             disable msa
4223         ;;
4224     esac
4225
4226 elif enabled ppc; then
4227
4228     disable ldbrx
4229
4230     case $(tolower $cpu) in
4231         601|ppc601|powerpc601)
4232             cpuflags="-mcpu=601"
4233             disable altivec
4234         ;;
4235         603*|ppc603*|powerpc603*)
4236             cpuflags="-mcpu=603"
4237             disable altivec
4238         ;;
4239         604*|ppc604*|powerpc604*)
4240             cpuflags="-mcpu=604"
4241             disable altivec
4242         ;;
4243         g3|75*|ppc75*|powerpc75*)
4244             cpuflags="-mcpu=750"
4245             disable altivec
4246         ;;
4247         g4|745*|ppc745*|powerpc745*)
4248             cpuflags="-mcpu=7450"
4249             disable vsx
4250         ;;
4251         74*|ppc74*|powerpc74*)
4252             cpuflags="-mcpu=7400"
4253             disable vsx
4254         ;;
4255         g5|970|ppc970|powerpc970)
4256             cpuflags="-mcpu=970"
4257             disable vsx
4258         ;;
4259         power[3-6]*)
4260             cpuflags="-mcpu=$cpu"
4261             disable vsx
4262         ;;
4263         power[7-8]*)
4264             cpuflags="-mcpu=$cpu"
4265         ;;
4266         cell)
4267             cpuflags="-mcpu=cell"
4268             enable ldbrx
4269             disable vsx
4270         ;;
4271         e500mc)
4272             cpuflags="-mcpu=e500mc"
4273             disable altivec
4274         ;;
4275         e500v2)
4276             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4277             disable altivec
4278             disable dcbzl
4279         ;;
4280         e500)
4281             cpuflags="-mcpu=8540 -mhard-float"
4282             disable altivec
4283             disable dcbzl
4284         ;;
4285     esac
4286
4287 elif enabled sparc; then
4288
4289     case $cpu in
4290         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4291             cpuflags="-mcpu=$cpu"
4292         ;;
4293         ultrasparc*|niagara[234])
4294             cpuflags="-mcpu=$cpu"
4295         ;;
4296     esac
4297
4298 elif enabled x86; then
4299
4300     case $cpu in
4301         i[345]86|pentium)
4302             cpuflags="-march=$cpu"
4303             disable i686
4304             disable mmx
4305         ;;
4306         # targets that do NOT support nopl and conditional mov (cmov)
4307         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4308             cpuflags="-march=$cpu"
4309             disable i686
4310         ;;
4311         # targets that do support nopl and conditional mov (cmov)
4312         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4313         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4314             cpuflags="-march=$cpu"
4315             enable i686
4316             enable fast_cmov
4317         ;;
4318         # targets that do support conditional mov but on which it's slow
4319         pentium4|pentium4m|prescott|nocona)
4320             cpuflags="-march=$cpu"
4321             enable i686
4322             disable fast_cmov
4323         ;;
4324     esac
4325
4326 fi
4327
4328 if [ "$cpu" != generic ]; then
4329     add_cflags  $cpuflags
4330     add_asflags $cpuflags
4331     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4332 fi
4333
4334 # compiler sanity check
4335 check_exec <<EOF
4336 int main(void){ return 0; }
4337 EOF
4338 if test "$?" != 0; then
4339     echo "$cc is unable to create an executable file."
4340     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4341         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4342         echo "Only do this if you know what cross compiling means."
4343     fi
4344     die "C compiler test failed."
4345 fi
4346
4347 add_cppflags -D_ISOC99_SOURCE
4348 add_cxxflags -D__STDC_CONSTANT_MACROS
4349 check_cflags -std=c99
4350 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4351 #include <stdlib.h>
4352 EOF
4353 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4354 #include <stdlib.h>
4355 EOF
4356
4357 add_host_cppflags -D_ISOC99_SOURCE
4358 check_host_cflags -std=c99
4359 check_host_cflags -Wall
4360 check_host_cflags -O3
4361
4362 check_64bit(){
4363     arch32=$1
4364     arch64=$2
4365     expr=$3
4366     check_code cc "" "int test[2*($expr) - 1]" &&
4367         subarch=$arch64 || subarch=$arch32
4368 }
4369
4370 case "$arch" in
4371     aarch64|alpha|ia64)
4372         spic=$shared
4373     ;;
4374     mips)
4375         check_64bit mips mips64 '_MIPS_SIM > 1'
4376         spic=$shared
4377     ;;
4378     parisc)
4379         check_64bit parisc parisc64 'sizeof(void *) > 4'
4380         spic=$shared
4381     ;;
4382     ppc)
4383         check_64bit ppc ppc64 'sizeof(void *) > 4'
4384         spic=$shared
4385     ;;
4386     s390)
4387         check_64bit s390 s390x 'sizeof(void *) > 4'
4388         spic=$shared
4389     ;;
4390     sparc)
4391         check_64bit sparc sparc64 'sizeof(void *) > 4'
4392         spic=$shared
4393     ;;
4394     x86)
4395         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4396         # Treat x32 as x64 for now. Note it also needs spic=$shared
4397         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4398             subarch=x86_64
4399         if test "$subarch" = "x86_64"; then
4400             spic=$shared
4401         fi
4402     ;;
4403     ppc)
4404         check_cc <<EOF && subarch="ppc64"
4405         int test[(int)sizeof(char*) - 7];
4406 EOF
4407     ;;
4408 esac
4409
4410 enable $subarch
4411 enabled spic && enable_weak pic
4412
4413 # OS specific
4414 case $target_os in
4415     aix)
4416         SHFLAGS=-shared
4417         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4418         enabled shared && add_ldflags -Wl,-brtl
4419         ;;
4420     android)
4421         disable symver
4422         enable section_data_rel_ro
4423         SLIB_INSTALL_NAME='$(SLIBNAME)'
4424         SLIB_INSTALL_LINKS=
4425         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4426         ;;
4427     haiku)
4428         prefix_default="/boot/common"
4429         network_extralibs="-lnetwork"
4430         host_libs=
4431         ;;
4432     sunos)
4433         SHFLAGS='-shared -Wl,-h,$$(@F)'
4434         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4435         network_extralibs="-lsocket -lnsl"
4436         add_cppflags -D__EXTENSIONS__
4437         # When using suncc to build, the Solaris linker will mark
4438         # an executable with each instruction set encountered by
4439         # the Solaris assembler.  As our libraries contain their own
4440         # guards for processor-specific code, instead suppress
4441         # generation of the HWCAPS ELF section on Solaris x86 only.
4442         enabled_all suncc x86 &&
4443             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4444             add_ldflags -Wl,-M,mapfile
4445         nm_default='nm -P -g'
4446         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4447         ;;
4448     netbsd)
4449         disable symver
4450         oss_indev_extralibs="-lossaudio"
4451         oss_outdev_extralibs="-lossaudio"
4452         enabled gcc || check_ldflags -Wl,-zmuldefs
4453         ;;
4454     openbsd|bitrig)
4455         disable symver
4456         SHFLAGS='-shared'
4457         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4458         SLIB_INSTALL_LINKS=
4459         oss_indev_extralibs="-lossaudio"
4460         oss_outdev_extralibs="-lossaudio"
4461         ;;
4462     dragonfly)
4463         disable symver
4464         ;;
4465     freebsd)
4466         ;;
4467     bsd/os)
4468         add_extralibs -lpoll -lgnugetopt
4469         strip="strip -d"
4470         ;;
4471     darwin)
4472         enabled ppc && add_asflags -force_cpusubtype_ALL
4473         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4474         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4475         strip="${strip} -x"
4476         add_ldflags -Wl,-dynamic,-search_paths_first
4477         SLIBSUF=".dylib"
4478         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4479         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4480         objformat="macho"
4481         enabled x86_64 && objformat="macho64"
4482         enabled_any pic shared x86_64 ||
4483             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4484         ;;
4485     msys*)
4486         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4487         ;;
4488     mingw32*|mingw64*)
4489         if test $target_os = "mingw32ce"; then
4490             disable network
4491         else
4492             target_os=mingw32
4493         fi
4494         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4495         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4496         LIBTARGET=i386
4497         if enabled x86_64; then
4498             LIBTARGET="i386:x86-64"
4499         elif enabled arm; then
4500             LIBTARGET=arm-wince
4501         fi
4502         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4503         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4504         shlibdir_default="$bindir_default"
4505         SLIBPREF=""
4506         SLIBSUF=".dll"
4507         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4508         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4509         dlltool="${cross_prefix}dlltool"
4510         if check_cmd lib.exe -list; then
4511             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4512             if enabled x86_64; then
4513                 LIBTARGET=x64
4514             fi
4515         elif check_cmd $dlltool --version; then
4516             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4517         fi
4518         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4519         SLIB_INSTALL_LINKS=
4520         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4521         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4522         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4523         objformat="win32"
4524         ranlib=:
4525         enable dos_paths
4526         check_ldflags -Wl,--nxcompat,--dynamicbase
4527         # Lets work around some stupidity in binutils.
4528         # ld will strip relocations from executables even though we need them
4529         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4530         # however ld then forgets what the entry point should be (oops) so we
4531         # have to manually (re)set it.
4532         if enabled x86_32; then
4533             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4534         elif enabled x86_64; then
4535             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4536             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4537             # Set image base >4GB for extra entropy with HEASLR
4538             add_ldexeflags -Wl,--image-base,0x140000000
4539             append SHFLAGS -Wl,--image-base,0x180000000
4540         fi
4541         ;;
4542     win32|win64)
4543         disable symver
4544         if enabled shared; then
4545             # Link to the import library instead of the normal static library
4546             # for shared libs.
4547             LD_LIB='%.lib'
4548             # Cannot build both shared and static libs with MSVC or icl.
4549             disable static
4550         fi
4551         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4552         shlibdir_default="$bindir_default"
4553         SLIBPREF=""
4554         SLIBSUF=".dll"
4555         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4556         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4557         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4558         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4559         SLIB_INSTALL_LINKS=
4560         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4561         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4562         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4563         objformat="win32"
4564         ranlib=:
4565         enable dos_paths
4566         ;;
4567     cygwin*)
4568         target_os=cygwin
4569         shlibdir_default="$bindir_default"
4570         SLIBPREF="cyg"
4571         SLIBSUF=".dll"
4572         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4573         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4574         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4575         SLIB_INSTALL_LINKS=
4576         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4577         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4578         objformat="win32"
4579         enable dos_paths
4580         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4581         ;;
4582     *-dos|freedos|opendos)
4583         network_extralibs="-lsocket"
4584         objformat="coff"
4585         enable dos_paths
4586         add_cppflags -U__STRICT_ANSI__
4587         ;;
4588     linux)
4589         enable dv1394
4590         enable section_data_rel_ro
4591         ;;
4592     irix*)
4593         target_os=irix
4594         ranlib="echo ignoring ranlib"
4595         ;;
4596     os/2*)
4597         strip="lxlite -CS"
4598         ln_s="cp -f"
4599         objformat="aout"
4600         add_cppflags -D_GNU_SOURCE
4601         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4602         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4603         LIBSUF="_s.a"
4604         SLIBPREF=""
4605         SLIBSUF=".dll"
4606         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4607         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4608         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4609             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4610             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4611             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4612             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4613         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4614             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4615         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4616         enable dos_paths
4617         enable_weak os2threads
4618         ;;
4619     gnu/kfreebsd)
4620         add_cppflags -D_BSD_SOURCE
4621         ;;
4622     gnu)
4623         ;;
4624     qnx)
4625         add_cppflags -D_QNX_SOURCE
4626         network_extralibs="-lsocket"
4627         ;;
4628     symbian)
4629         SLIBSUF=".dll"
4630         enable dos_paths
4631         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4632         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4633         add_ldflags -Wl,--target1-abs,--no-undefined \
4634                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4635                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4636         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4637                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4638                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4639         ;;
4640     osf1)
4641         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4642         ;;
4643     minix)
4644         ;;
4645     plan9)
4646         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4647                      -D_REENTRANT_SOURCE        \
4648                      -D_RESEARCH_SOURCE         \
4649                      -DFD_SETSIZE=96            \
4650                      -DHAVE_SOCK_OPTS
4651         add_compat strtod.o strtod=avpriv_strtod
4652         network_extralibs='-lbsd'
4653         exeobjs=compat/plan9/main.o
4654         disable ffserver
4655         cp_f='cp'
4656         ;;
4657     none)
4658         ;;
4659     *)
4660         die "Unknown OS '$target_os'."
4661         ;;
4662 esac
4663
4664 # determine libc flavour
4665
4666 probe_libc(){
4667     pfx=$1
4668     pfx_no_=${pfx%_}
4669     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4670     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4671         eval ${pfx}libc_type=uclibc
4672         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4673     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4674         eval ${pfx}libc_type=glibc
4675         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4676     # MinGW headers can be installed on Cygwin, so check for newlib first.
4677     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4678         eval ${pfx}libc_type=newlib
4679         add_${pfx}cppflags -U__STRICT_ANSI__
4680     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4681     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4682         eval ${pfx}libc_type=mingw64
4683         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4684             add_compat msvcrt/snprintf.o
4685             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4686         fi
4687         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4688         eval test \$${pfx_no_}cc_type = "gcc" &&
4689             add_${pfx}cppflags -D__printf__=__gnu_printf__
4690     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4691          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4692         eval ${pfx}libc_type=mingw32
4693         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4694             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4695             die "ERROR: MinGW32 runtime version must be >= 3.15."
4696         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4697         eval test \$${pfx_no_}cc_type = "gcc" &&
4698             add_${pfx}cppflags -D__printf__=__gnu_printf__
4699     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4700         eval ${pfx}libc_type=msvcrt
4701         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4702             if [ "$pfx" = host_ ]; then
4703                 add_host_cppflags -Dsnprintf=_snprintf
4704             else
4705                 add_compat strtod.o strtod=avpriv_strtod
4706                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4707                                              _snprintf=avpriv_snprintf  \
4708                                              vsnprintf=avpriv_vsnprintf
4709             fi
4710         fi
4711         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4712         # 0x601 by default unless something else is set by the user.
4713         # This can easily lead to us detecting functions only present
4714         # in such new versions and producing binaries requiring windows 7.0.
4715         # Therefore explicitly set the default to XP unless the user has
4716         # set something else on the command line.
4717         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4718         # family. For these cases, configure is free to use any functions
4719         # found in the SDK headers by default. (Alternatively, we could force
4720         # _WIN32_WINNT to 0x0602 in that case.)
4721         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4722             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4723 #ifdef WINAPI_FAMILY
4724 #include <winapifamily.h>
4725 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4726 #error not desktop
4727 #endif
4728 #endif
4729 EOF
4730     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4731         eval ${pfx}libc_type=klibc
4732     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4733         eval ${pfx}libc_type=bionic
4734     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4735         eval ${pfx}libc_type=solaris
4736         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4737     fi
4738     check_${pfx}cc <<EOF
4739 #include <time.h>
4740 void *v = localtime_r;
4741 EOF
4742 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4743 #include <time.h>
4744 void *v = localtime_r;
4745 EOF
4746
4747 }
4748
4749 probe_libc
4750 test -n "$libc_type" && enable libc_$libc_type
4751 probe_libc host_
4752 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4753
4754 case $libc_type in
4755     bionic)
4756         add_compat strtod.o strtod=avpriv_strtod
4757         ;;
4758 esac
4759
4760 # hacks for compiler/libc/os combinations
4761
4762 if enabled_all tms470 libc_glibc; then
4763     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4764     add_cppflags -D__USER_LABEL_PREFIX__=
4765     add_cppflags -D__builtin_memset=memset
4766     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4767     add_cflags   -pds=48    # incompatible redefinition of macro
4768 fi
4769
4770 if enabled_all ccc libc_glibc; then
4771     add_ldflags -Wl,-z,now  # calls to libots crash without this
4772 fi
4773
4774 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4775     add_cppflags '-I\$(SRC_PATH)/compat/float'
4776
4777 esc(){
4778     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4779 }
4780
4781 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4782
4783 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4784
4785 set_default libdir
4786 : ${shlibdir_default:="$libdir"}
4787 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4788
4789 set_default $PATHS_LIST
4790 set_default nm
4791
4792 # we need to build at least one lib type
4793 if ! enabled_any static shared; then
4794     cat <<EOF
4795 At least one library type must be built.
4796 Specify --enable-static to build the static libraries or --enable-shared to
4797 build the shared libraries as well. To only build the shared libraries specify
4798 --disable-static in addition to --enable-shared.
4799 EOF
4800     exit 1;
4801 fi
4802
4803 die_license_disabled() {
4804     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4805 }
4806
4807 die_license_disabled_gpl() {
4808     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4809 }
4810
4811 die_license_disabled gpl frei0r
4812 die_license_disabled gpl libcdio
4813 die_license_disabled gpl librubberband
4814 die_license_disabled gpl libsmbclient
4815 die_license_disabled gpl libutvideo
4816 die_license_disabled gpl libvidstab
4817 die_license_disabled gpl libx264
4818 die_license_disabled gpl libx265
4819 die_license_disabled gpl libxavs
4820 die_license_disabled gpl libxvid
4821 die_license_disabled gpl libzvbi
4822 die_license_disabled gpl x11grab
4823
4824 die_license_disabled nonfree libaacplus
4825 die_license_disabled nonfree libfaac
4826 die_license_disabled nonfree nvenc
4827 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4828 enabled gpl && die_license_disabled_gpl nonfree openssl
4829
4830 die_license_disabled version3 gmp
4831 die_license_disabled version3 libopencore_amrnb
4832 die_license_disabled version3 libopencore_amrwb
4833 die_license_disabled version3 libsmbclient
4834 die_license_disabled version3 libvo_aacenc
4835 die_license_disabled version3 libvo_amrwbenc
4836
4837 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4838
4839 disabled optimizations || check_cflags -fomit-frame-pointer
4840
4841 enable_weak_pic() {
4842     disabled pic && return
4843     enable pic
4844     add_cppflags -DPIC
4845     case "$target_os" in
4846     mingw*|cygwin*)
4847         ;;
4848     *)
4849         add_cflags -fPIC
4850         ;;
4851     esac
4852     add_asflags  -fPIC
4853 }
4854
4855 enabled pic && enable_weak_pic
4856
4857 check_cc <<EOF || die "Symbol mangling check failed."
4858 int ff_extern;
4859 EOF
4860 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4861 extern_prefix=${sym%%ff_extern*}
4862
4863 check_cc <<EOF && enable_weak inline_asm
4864 void foo(void) { __asm__ volatile ("" ::); }
4865 EOF
4866
4867 _restrict=
4868 for restrict_keyword in restrict __restrict__ __restrict; do
4869     check_cc <<EOF && _restrict=$restrict_keyword && break
4870 void foo(char * $restrict_keyword p);
4871 EOF
4872 done
4873
4874 check_cc <<EOF && enable pragma_deprecated
4875 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4876 EOF
4877
4878 check_cc <<EOF && enable attribute_packed
4879 struct { int x; } __attribute__((packed)) x;
4880 EOF
4881
4882 check_cc <<EOF && enable attribute_may_alias